Pureeing the veggies in the food processor makes for faster chopping time, no peeling of tomatoes and a finer chunk salsa. Always start with high quality organic ingredients. Plum tomatoes are a better choice because they are meatier and less juice producing a thicker salsa. Don't use over ripe tomatoes. The tequila can be omitted with wonderful results. But when used gives a slight smokiness. The smoky, woody flavor is more evident in Añejo tequila. Try Paradiso has a smoky, smooth flavor.