We start with the sauce - fry garlic in oil, take it out of the saucepan, add tomatoes, reduce the heat to a minimum, salt and close the lid. Watch for half an hour, stirring occasionally, add a little water at a strong boil. While the sauce is being prepared, let's do squid. Gently pull the head, the insides and the long transparent handle that replaces the spine. Rinse. Helping yourself with the tip of a knife, remove the skin. The procedure is tedious, but simple. Cut off the tentacles, remove the "beak" from the center of the tentacles with a knife. Cut the squid into rings.