Base recipe was this one from Kitchen Mason but it has far too little chillies for our harvests to make use of. Below were some adjustments recorded from the first attempt.
The first time (using purely our on veg meaning we omitted the ginger), the tomatoes used were blanched and deskinned and the pulp put through a sieve to remove seeds/fibrous bits. But nothing wrong with using any excess (homemade) passata we probably have on hand.