Add the avocados and the juice from 1 lime and a few pinches of salt. Mash up using a fork until the guacamole resembles the consistency that you like.

Fold in the jalapeños, tomatoes and red onion and juice from the 2nd lime. Salt to taste and adjust the lime juice, according to taste (I always add more lime juice). Can be made up to 1 day in advance if stored in an airtight container in the fridge.