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Ask Chef Walter: Tomato Relish Tutorial – Walter Potenza
by Chef Walter Potenza, contributing writer
Making a batch is one of the most satisfying ways to stretch the tomato season. A few jars on the counter or in the fridge turn ordinary weeknight food into something memorable.
Friends:
Today, I’m preparing tomato relish, perhaps the most enjoyable thing to do in late summer. There’s a real satisfaction in turning a bunch of ripe, sun-warmed tomatoes into a bright, tangy condiment, especially since it will add zest to meals for months afterward. This is more than just a recipe; it is a celebration of the season’s abundance, a way to capture summer’s strong flavors and keep them in a jar.
Tomato relish is so appealing because its flavors balance—the natural sweetness of the tomatoes, the sharpness of the vinegar, the warmth of the spices, and the mild heat of the chili blend in harmony. It is a versatile accompaniment, ideal with grilled meats, sharp cheeses, or spread on crusty bread. Whenever I smell the tomatoes, onions, and spices cooking in the kitchen, I am also reminded of the many generations of home cooks who have made this same transformation, turning the garden’s gift into a condiment that tastes like sunshine and tradition. Today, I am adding my own section to that story.
Yesterday, I bought a box of fresh tomatoes from Confreda Farm in Cranston and realized that I wouldn’t be able to eat them all before they went bad. That’s when I got the idea of making a tomato relish to mark the end of summer. It’s an excellent way to use up extra tomatoes and a versatile condiment that adds flavor to meals even after summer has ended. The relish has a tangy, sweet taste, and it’s ideal for adding a pleasant touch to dishes when fresh tomatoes aren’t available.
As summer ends, juicy tomatoes become more available—from ripe heirlooms to firm Romas, and even green ones that may never fully ripen before the cooler nights arrive. Rather than throwing them away, how about making them into a tasty homemade relish? This traditional preserve involves achieving a good balance between the natural sweetness of the tomatoes, the sharpness of the vinegar, the richness provided by the sugar, and the depth from the onions and warm spices. The end product is a thick, lively relish with plenty of flavor, and it keeps well in the refrigerator for weeks. To store it even longer, you can use the water-bath canning method.
Usually, late-season tomatoes tend to become more flavorful because the plants are under stress from cooler temperatures; ripe tomatoes have a deep, jam-like taste, while green or unripe ones stay firmer and offer a more vibrant tartness similar to traditional chow-chow—option works. To add visual appeal and complexity, use tomatoes of different colors and sizes. The meatier ones help reduce the liquid and produce a thicker relish without having to simmer it as long. Cherry or grape tomatoes don’t need to be peeled or seeded and cook down very well.
Tomato Relish
To prepare this simple recipe, you’ll need ripe tomatoes; it yields about 3 to 4 cups of relish, enough to fill 3 to 4 half-pint jars. Since this is not a traditional canning recipe, keep the relish in the refrigerator to keep it fresh and safe. If you do want to store it at room temperature, then you must use a tested canning recipe and carry out the additional steps needed: sterilize the jars and lids, fill them with hot relish, leaving a small amount of space at the top, clean the rims, put the lids on the jars, and process them in a boiling water bath for the recommended length of time. If you’re uncertain about the canning process, you can get further information from your local extension service or the National Center for Home Food Preservation. Preparation takes about 15 minutes, and cooking takes 30 to 45 minutes.
Ingredients
5 cups diced tomatoes (about 1½ to 2 pounds; if the tomatoes are very juicy, remove the seeds, but you don’t need to peel them). For a chunkier relish, leave the skins on for more texture; for a smoother relish, peel them and remove the seeds.
½ medium red onion, finely diced
For this recipe, use 1 cup of ordinary sugar, but if you find it too sweet, you can use less. Alternatively, you can use honey or maple syrup for a different flavor. Use two or three tablespoons of any of the following vinegars: red wine, apple cider, or white vinegar.
For a bit of heat, add half to one jalapeño or another mild chili, but remove the seeds and cut it into small pieces. Use only half the pepper for mild warmth, or the whole one for stronger spice. If you’re feeling bold, keep some of the seeds and inner membranes for more heat, or try a spicier chili such as serrano. If you’d like it mild, don’t add any chili at all, or use just a quarter of it, tasting as you go to make sure it’s not too hot.
½ tsp kosher salt
½ tsp ground cumin
Use roughly ½ tsp crushed red pepper flakes or adjust to taste.
¼ tsp paprika
Freshly ground black pepper
Optional: 1 Tbsp grated fresh ginger, pinch of ground cloves or cinnamon, or mustard seeds for extra depth
Procedure
Put all ingredients in a wide saucepan or skillet and stir well. Bring the mixture to a gentle boil. At first, it will release some liquid and look quite moist.
Continue cooking, stirring every few minutes, until the mixture thickens and reduces by about a quarter. The color will deepen during cooking, and the mixture will start to look like ordinary relish; this should take about 30 to 45 minutes. After that, taste and add more salt, vinegar, sugar, or heat if needed.
If you want to keep your relish fresh for a short time, remove it from the heat and place it in clean jars. After it cools, refrigerate it; it will stay good for a few weeks, or possibly longer, as long as you use a clean spoon each time. For long-term storage without canning, freeze the relish in freezer-safe containers or bags. Thaw it in the fridge before using, and aim to use it within a few months so it still tastes and feels right.
Variations
Try using green tomatoes for a bit of variety; they provide a sharper, crisper flavor. Occasionally, traditional recipes include celery seed and mustard seed, along with more vinegar, to add extra flavor; then process the tomatoes in a water bath to help them keep longer. This lets you enjoy your green tomatoes year-round.
Reduce the sugar and increase the vinegar slightly to achieve a sharper flavor.
Toasted: Toast the mustard seeds or add a cinnamon stick early to achieve warmer flavors.
The relish must have a well-balanced mix of flavors—sweet enough to pair with rich foods but tangy enough to cut through their richness.
How to Pair Tomato Relish
Because of its sweet, slightly sour flavor and soft texture, it works well in a wide variety of dishes.
Use it on burgers, hot dogs, or sausages to add extra flavor; you can also spoon it over grilled chicken or pork to help cut the meat’s richness. It’s similar to ketchup or pickle relish, but with a fresher, more tomato-like taste.
For cheese boards and charcuterie, serve sharp cheddar, creamy goat cheese, aged Gouda, or soft Brie. The acidity refreshes the palate after rich cheese or cured meats.
For sandwiches and wraps, use turkey, ham, roast beef, or grilled cheese with (rather than) mustard or mayo; it also improves egg salad or tuna.
Serve it alongside scrambled or fried eggs at breakfast, or mix it into an omelet for extra flavor.
For roasted or grilled vegetables, serve zucchini, eggplant, or corn.
You can easily improve your meals with a few simple tips. For example, mix it into mayonnaise or sour cream to make a fast, delicious dipping sauce or a burger spread. Or use it as a glaze in the final few minutes of roasting meatloaf or chicken, since it adds rich flavor. Another option is to pour it over baked potatoes or grain bowls for extra flavor. Small changes can make a big difference in your food’s taste.
For wine, the sharp taste of relish pairs well with crisp, refreshing whites such as Sauvignon Blanc or Pinot Grigio; it also goes well with lighter reds, such as Chianti or Barbera, since they have enough acidity to stand up to the natural tartness of tomatoes without losing their own flavor.
There’s something special about turning a batch of tomatoes into something memorable; it’s a great way to make the most of the season and have tasty food to enjoy later. If you have a few jars of your own made treats on the counter or in the fridge, it can turn an ordinary weeknight meal into a really memorable one. It’s also a good way to keep the fresh flavors of summer for a little longer.
Tomato Relish and Chutney: Reflection
I forgot to tell you about the difference between a tomato relish and a chutney—because in my kitchen, they are not the same thing at all.
A relish is bold and bright. It hits you with acidity right away—the kind of sharp, clean tang that wakes up your palate. I think of it as the cousin of a pickle: chunky, often with a bit of crunch, and meant to sit alongside something hearty. A burger, a grilled sausage, a cold cut sandwich—relish cuts through the richness and makes everything taste fresher. It’s quick to make, too. You chop your tomatoes, add some onion, vinegar, a little sugar, maybe some mustard seed or curry powder, and you’re done. It’s honest food, no fuss, no long simmering.
Now, a chutney—that’s a different story. A chutney is slow food. It’s the result of patience. You take your tomatoes—and often other fruits, like mango or apple—and you cook them down for hours with sugar, vinegar, and a symphony of spices. Ginger, cinnamon, cloves, cardamom—the whole pantry comes out. What you get is thick, dark, and jam-like, with a sweetness that dances with the sour, and a warmth that lingers on your tongue. Chutney doesn’t just sit next to your food; it becomes part of it. It belongs with curries, rice, with flatbreads. It carries centuries of tradition from the Indian subcontinent, where the word chatni meant something ground or pounded.
There is, of course, some overlap. You can make a sweet relish or a savory chutney, and I’ve seen recipes blur the lines. But if you ask me, each soul is distinct. A relish is the sound of a sharp knife on a cutting board—bright and immediate. A chutney is the smell of spices blooming in hot oil—deep, layered, and patient.
Both are beautiful. Both preserve the tomato in their own way. But when I reach for one, I know exactly what I’m in the mood for: either the snap of something fresh or the comfort of something slow.
Therefore, why not make the most of the tomatoes when they’re at their best—or preserve some of that flavor to enjoy when the seasons change? Give it a try!
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Master Chef Walter Potenza
There is a constant, recognizable thread in the career of Walter Potenza to elevate the level of Italian culinary culture in the United States. Besides his unquestionable culinary talent and winning business perspective, Chef Walter has been a relentless educator with passion and knowledge who defeats stereotypes. His life, career, and values are a model, an example to follow by any chef of Italian gastronomy working outside Italy.
Chef Walter appears regularly on National and International Networks such as Food Network, ABC, CBS, NBC, RAI, FOX, and Publications such as NY. Times, Washington Post, Wall Street Journal, Food & Wine, Saveur, Gourmet, and several Italian media outlets.