Dunk tomatoes in a pot of boiling water for 15 seconds, remove and peel off skin. Cut in half and squeeze out seeds. Chop remaining tomato flesh roughly.
Gently heat olive oil, tomatoes, garlic, salt and sugar and half the basil leaves and cook gently until soft, around 30 minutes.
Cook pasta in plenty of simmering, salted water until tender, but still firm to the bite. Drain we