When they are ripe and sweet, buy a big batch of cherry tomatoes, to make double or triple the quantity of sauce. It takes a while to cook - just over an hour - but it keeps in the fridge for 5 days and freezes for up to a month. The ancho chilli adds a lovely smoky richness, but can be replaced by ¼ tsp sweet smoked paprika, if you have this to hand rather than ancho. Alternatively, if you don't want the kick, leave the chilli out altogether.
Ingredients
75mlolive oil
2clovesgarlic, thinly sliced
1kgcherry tomatoes, sliced in half
½tspcaster sugar, or a bit more or less, depending on the sweetness of the tomatoes