Tips for guacamole or using avocados. Putting unripe avocados with your bananas, as mentioned, will help speed up the ripening, as the bananas release a gas as they themselves ripen and this affects other fruits/vegetables near them. So, put your bananas and avocados together, but don't put your bananas near other fruits you want to last a few days!
Also, when your avocados have started to ripen, don't leave them with the bananas or they will go over-ripe a lot more quickly than perhaps what you intend.
The paper bag trick works too, but bananas are easier to come by these days than a brown paper bag!
Once you've got a ripe avocado and are going to use it, if you want to keep the avocado or guacamole from going brown, put some tomato in it. The acids from the tomato keep the avocado from browning and keep it fresher longer.
For a twist on your usual guacamole/salsa combo, try making your salsa with chopped avocado bits.
Simple recipe of salsa with avocado:
Tin of chopped tomatoes
1 or 2 fresh plum tomatos (plum tomatoes are good for salsa as they are more meaty)
1 onion
1 bunch spring onions
Coriander/cilantro
Dash cumin
dash garlic salt
Salt to taste
1 or 2 avocados
Stick the tin of tomatoes into the blender
Put your salts in, then your cilantro
Rough cut the tomatoes and onion (halve or quarter), put them in
Cut the tops off the green onions and trim the bottoms, stick them in
Give it a whirl, not too fine
Meanwhile, get your avocados into chopped pieces, then pour your salsa into a bowl, add the avocados and give it a stir, and dig in!