I always used to use tinned roma tomatoes but in the past 4-5 years have substituted 700-1400ml tomato passata. It results in a sweeter flavour (tomato seeds are notoriously bitter). Alternatively you could pass the tomatoes through a sieve, eliminating the skin and seeds.
I always used to use tinned roma tomatoes but in the past 4-5 years have substituted 700-1400ml tomato passata. It results in a sweeter flavour (tomato seeds are notoriously bitter). Alternatively you could pass the tomatoes through a sieve, eliminating the skin and seeds.