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Ripe tomatoes make a surprisingly good jam. Cooked slowly with fresh chilies, sugar, and vinegar, they turn into a rich, sweet and tangy spread with just the right amount of heat. It is a little different from a traditional fruit jam, with a savory depth that makes it especially good alongside cheese, grilled meat, and toasted sandwiches.

This recipe is a great way to use a generous crop of summer tomatoes. The ingredients simmer together in one saucepan until the tomatoes soften and the excess liquid cooks away. No commercial pectin is needed, and you can adjust the chili heat to suit your taste.

You can spread it over a slice of crusty bread with mature cheddar, spoon it over cream cheese for an easy appetizer, or use it to give a burger a sweet, spicy kick. A small jar also makes a thoughtful homemade gift, provided it is kept refrigerated.

Ingredients You Need

This tomato and hot pepper jam uses a handful of everyday ingredients, but getting the balance right makes all the difference. I like the combination of ripe tomatoes, tangy vinegar and fresh chilies because it gives the jam enough sweetness to complement savory foods without tasting like a dessert preserve.

Tomatoes: You will need 1 kg of ripe, flavorful tomatoes. Roma tomatoes are a good option because they contain less water, but homegrown tomatoes work beautifully too. Choose fruit that is fully ripe and tastes good on its own, since that flavor becomes more concentrated as the tomatoes cook down.

Fresh red chilies: Start with two or three chilies, depending on their size and heat. Removing the seeds and inner membranes makes the jam milder, although the variety of chili matters more than the number alone. If you enjoy a proper kick, leave some of them in.

Granulated sugar: Use 300 g. The sugar balances the acidity of the tomatoes and vinegar while helping the mixture develop its jammy consistency.

Apple cider vinegar: Add 120 ml of vinegar with 5% acidity. Its sharpness keeps the sweetness in check and gives the finished jam its characteristic tang.

Salt: Half a teaspoon is enough to bring the flavors together.

Garlic: One small, finely chopped clove is optional. I would include it for a more savory jam to serve with burgers or steak, but it is easy to leave out if you want the tomato and chili flavors to stand on their own.

How to Make Tomato and Hot Pepper Jam

1. Prepare the tomatoes and chilies

Remove the tomato cores and chop the tomatoes into small pieces. Finely chop the chilies, taking care when handling particularly hot varieties. Gloves are a good idea if you are sensitive to chili oils, and remember to wash your hands thoroughly afterward.

I usually leave the tomato skins on for a recipe like this. They soften as the mixture cooks, and skipping the peeling saves time without making much difference to the finished jam. But if you prefer a smoother texture, you can peel the tomatoes before chopping of course.

2. Combine the ingredients

Place the tomatoes and chilies in a large, heavy-bottomed saucepan. Add the sugar, apple cider vinegar, salt and garlic, if using. Set the pan over medium heat and stir until the sugar dissolves and the tomatoes begin releasing their juices.

The mixture will look quite watery at first, particularly if you are using juicy garden tomatoes. That is completely normal. The liquid will gradually evaporate as the jam cooks, so there is no need to add water.

3. Simmer until thick

Bring the mixture to a gentle boil, then reduce the heat and simmer uncovered for approximately 45 to 70 minutes. Stir regularly, especially as the mixture thickens toward the end. The sugar can catch on the bottom of the pan if the heat is too high, so a steady simmer is your friend here.

The exact cooking time depends on the tomatoes and how much moisture they contain. Rather than relying on the clock alone, look for a glossy mixture that has reduced considerably. When you drag a spoon across the bottom of the pan, the trail should remain visible briefly before the jam flows back together.

4. Check the consistency

If you are unsure whether the jam is ready, try the chilled plate test. Place a small plate in the freezer before you start cooking, then spoon a little of the hot mixture onto it. Leave it for about a minute before gently pushing the jam with your finger.

It should move slowly and wrinkle slightly rather than spread like a thin sauce. I find this a much more useful guide than judging the jam while it is bubbling in the saucepan, because hot jam always looks looser than it will once cooled.

Take the pan off the heat while the mixture is still a little softer than your preferred final consistency. It will thicken further as it cools, and a few extra minutes of cooking can make more difference than you might expect.

5. Cool and store

Let the jam settle briefly, then transfer it to clean jars. Allow it to cool before covering and refrigerating, or freeze it in suitable containers with a little room at the top for expansion.

Tips for a Good Batch

Choose tomatoes with plenty of flavor. Since tomatoes are the main ingredient, their ripeness matters more than their appearance. Roma tomatoes are useful when the fruit is particularly juicy, but there is no need to seek out a special variety if you already have good garden tomatoes.

Adjust the chili to suit your taste. Chili heat varies considerably between varieties. For your first batch, start with a modest amount and make a note of what you use. That gives you a useful starting point if you want to make the next batch hotter.

Give the jam time to reduce. It can be tempting to turn up the heat when the mixture still looks watery, but cooking too aggressively increases the chance of scorching. A steady simmer gives the tomatoes time to soften and the flavors time to come together.

Decide how smooth you want the finished jam. I prefer a little texture in a savory tomato jam, particularly when serving it with cheese. For a smoother spread, peel the tomatoes beforehand or carefully blend the cooked mixture.

Easy Variations

Once you have made the basic recipe, there are several ways to change the flavor depending on how you plan to serve it.

For a hotter jam, add another chili or use a stronger variety. Garlic with a pinch of smoked paprika gives the mixture a deeper, more savory character that works especially well with grilled food. If you prefer something milder, replace one or more chilies with chopped red sweet pepper the same you would use to make an old fashioned relish. A small pinch of freshly ground black pepper adds another layer of warmth without significantly increasing the chili heat.

These variations are intended for refrigerated or frozen storage.

What to Serve with Tomato and Hot Pepper Jam

One of my favorite ways to serve tomato jam is with mature cheddar and crackers. The salty, sharp cheese balances the sweetness of the tomatoes, while the vinegar cuts through the richness. Goat cheese and cream cheese are also good choices, especially spread on toasted bread.

The jam is just as useful in savory meals. Add a spoonful and spread it inside a toasted cheese sandwich, or serve it alongside grilled sausages and chicken. It also works well with roasted vegetables when you want something punchier than an ordinary sauce.

Start with a small spoonful and adjust to taste. The jam should complement the other ingredients rather than overpower them.

How to Store It

Keep the cooled jam in clean, covered containers or jars in the refrigerator at 4°C or below. As a conservative guideline, use it within about two weeks.

If you have made a larger batch, freezing is a practical way to save the extra. Transfer the jam to airtight, freezer-safe containers, leave a little room at the top for expansion, and freeze for up to three months for best quality. Thaw it in the refrigerator before serving.

Can it be stored at room temperature? Well, not really. This recipe is meant to be stored in the fridge or freezer, not the pantry. Even with sugar and vinegar, the jam isn’t guaranteed to be safe at room temperature. If you want to keep jars on the shelf, use a tested canning recipe with proper processing instructions. Sealing the jars alone isn’t enough.

Discard the jam if you notice mold, an unusual smell or other signs of spoilage.

Frequently Asked Questions

Does tomato jam need pectin?

No. The tomatoes thicken as their liquid evaporates, creating a soft, spreadable consistency without commercial pectin. The result is closer to a savory condiment than a firmly set fruit jam, which suits its use with cheese and grilled foods.

Why is my jam runny?

The tomatoes may have contained more water than expected. Some batches need longer to reduce, so use the chilled plate test described in the method rather than relying on the cooking time alone. Keep in mind that the jam will become thicker as it cools.

Can I use green tomatoes?

Yes, although the flavor will be sharper and less sweet than a batch made with ripe tomatoes. Green tomatoes can be useful when you have a surplus to use up, but expect some variation in flavor and texture.

Can I reduce the sugar?

You can adjust the sweetness, but using less sugar may leave the jam thinner. I recommend making the recipe as written first so you have a baseline for future adjustments. Any modified version should still be refrigerated or frozen and must not be assumed safe for room-temperature storage.

How do I make the jam less spicy?

Use fewer chilies, remove their seeds and inner membranes, or replace some of them with sweet red pepper. Choosing a milder chili variety also helps. If you are serving the jam to people with different spice preferences, a gentler batch is a sensible place to start.