ABOUT THIS RECIPETomato as a spicy base
In tomato sambal, tomato is no side note: the fruit forms the sambal’s soft, juicy base. Frying ripe tomatoes with red chilies, shallot and garlic in oil mellows their sharp, raw flavors and brings the mixture together into a deep, savory taste. Choose tomatoes that are ripe but still firm; watery tomatoes will also work, but need a little longer to cook down. In the Netherlands, tomatoes are often more aromatic from late spring to early autumn, but good, ripe store-bought tomatoes work all year round.
The amount of chili mainly determines the heat. Red bird’s eye chilies bring a direct, powerful kick; using fewer bird’s eye chilies or a larger, milder red chili makes the sambal more approachable. For a milder version, remove some of the seeds and membranes, or start with two chilies and add more after frying if you like. Roughly chop the ingredients: they’ll be mashed later anyway. A wide frying pan helps the liquid from the tomatoes evaporate, so you don’t end up with a thin sauce.
Let the mixture fry gently until the tomatoes fall apart and the liquid has visibly cooked down. This takes longer than simply softening the ingredients, but gives you a concentrated sambal that clings well to rice. Stir regularly and keep the heat moderate; the garlic and shallot should become soft and fragrant, not dark brown. Mash the sambal with a fork or masher for a chunky texture. If you prefer a smoother result, pulse it briefly, but don’t blend it for too long: a little texture works well here.
Add the lime juice right at the end. Its fresh acidity balances the rich, sweet tomato and the chili; taste the sambal once it has cooled slightly, then add a little more juice or salt if needed. Serve it at room temperature or lukewarm alongside rice, fried tofu, tempeh, egg or an Indonesian-inspired meal. A small spoonful is often enough to add more heat and freshness to a bite.
Store leftovers in a clean, sealed container in the refrigerator and chill them within two hours of cooking. Use the sambal within three days. Serve it cold or warm it gently in a small pan; if it has become very firm, add a teaspoon of water while reheating. Always use a clean spoon when serving, so no food gets into the storage container.