Once a year I like to make a Doce de Tomate - a Portuguese tomato jam that is a traditional accompaniment to cheese -- mmm, Serra da Estrela, Azeitao, Nisa!
The ratio is 3 parts tomato, 1 part sugar, 1 part orange juice, and 1 cinnamon stick (or portion therof, depending on how much you like cinnamon). Peel and seed the tomatoes, add the sugar, orange juice, and cinnamon, and simmer until thick. Allow to cool completely. I can the jam and give it as a present to foodie friends. It pairs well with goat cheese or soft sheep and cow's milk cheeses.