Tomato Sauce with Marsala

500 g fresh tomatoes
1 small onion, chopped
30 g lean ham or bacon, cut into small pieces
1 clove of garlic
1 sherryglassful Marsala
 
Fry the chopped onion in butter, add the ham or bacon then the peeled and quartered tomatoes and the garlic. Season with salt and pepper and let the sauce cook rapidly for 5 minutes. Pour in the Marsala and cook for 2 or 3 more minutes.