* There is variation in heat across jalapeño peppers, with some peppers very mild. If you want a mild salsa, remove the seeds and membranes before chopping the peppers. If you want a spicier salsa, use 3 jalapeño peppers and keep the seeds in. Or use 1 or 2 serrano peppers, which are considerably spicier (or even a habanero pepper for something super spicy!).