To get maximum sweetness out of the tomatoes without using sugar, they need to be reduced down. This can either be done by slow roasting in the oven or simmered long and slow on the hob. Use very ripe fresh toms or tinned. I concocted this sugar & salt free tomato ketchup recipe for GGD, then 8m, and we all loved it. 3 tomatoes, peeled & quartered, 1/2 red pepper, cut into flat pieces, 1 peeled garlic clove. Roast above on baking tray with a little olive oil at 200C fan for 10/15 mins. Put through mouli or seive. Add 1 tablespoon of tomato puree and a little balsamic vinegar to taste. For a pasta sauce, simply simmer a tin of tomatoes in a pan with a glug of olive oil and clove of garlic chopped or crushed. You can also add a little white wine, if there's a bottle open and dried oregano. Cook gently on the hob for at least 20-30 mins until the tomatoes have broken down and the sauce is thick and rich. Add salt & pepper to taste and some shredded fresh basil if you have some to hand. Enjoy!