House-made sauces win on control, freshness and identity. A commercial bottled sauce is formulated to appeal to the broadest possible audience and to survive months of shelf life, which typically means it is milder, sweeter and more heavily stabilised than any single sandwich actually needs. A sauce made in-house can be tuned precisely to the build it belongs on — sharper, smokier or spicier as required — and it is prepared in small batches for near-immediate use, so it tastes brighter and cleaner. Just as importantly, a signature house-made sauce gives a kitchen a flavour that competitors cannot simply buy and copy. At Sandwich Lab, sauces such as our secret sauce and propola picante exist precisely because no bottled option delivered what we were looking for.

Often, yes, though it depends on the recipe. The main advantage is that a house-made sauce is prepared in small batches for immediate use, so it does not require the preservatives, stabilisers and shelf-life additives that mass-produced bottled sauces rely on. A kitchen making its own sauce also controls exactly what goes in, which means it can avoid unnecessary sugar, artificial ingredients and excessive additives if it chooses to. That said, homemade does not automatically mean low-calorie — a rich sauce is still rich whether it is bottled or made in-house. The honest summary is that house-made sauces tend to be fresher and less processed, giving you cleaner flavour and better transparency about ingredients, while the overall richness still depends on the specific recipe.