Avocado and Tomato Dip

This is my version of guacamole. I like it much better than any I have either bought in a supermarket or eaten in a restaurant and I have come to the conclusion that there are two things I don’t like in guacamole: raw onion, in however infinitesimal amounts, and mayonnaise. Now, I can hear people saying that a true guacamole doesn’t have mayonnaise in, but several versions do, and the combination of avocado and mayonnaise is, to me, soapy. This is such a simple and useful dish – you can eit