The key to this dish being the best it can be, is having really ripe and juicy tomatoes. When it comes to choosing tomatoes, you want to make sure they are in season. Winter tomatoes are just absolutely tasteless. Locally grown or homegrown are always the best, but if you are getting them from the supermarket then we have some tips.u003cbr/u003eYou might think that squeezing the tomato is the best way to tell if it's ripe, but it isn't. Instead, hold the tomato in the palm of your hand and it should feel heavy for its size. You should also do a sniff test - ripe tomatoes should smell sweet and earthy and the stronger the tomato smells, the more ripe it is. So, resist squeezing it and ruining it.