Cut the avocados in half, squeeze out the pit (just gently squeeze till it pops out) and scoop the fruit into a bowl.
Add the salt, juice, salsa, and garlic powder. Mash it together with a fork ( I like to leave some chunks)
Taste. If you can't taste the avocado much, add a bit of salt. If it's a little flat, dribble a little juice in. if it's not spicy enough, add a little more salsa. Try more garlic powder to see hot that changes it. Play with it and you will find your ideal quac balance point. This is the secret to excellent quacamole!
Stir in cilantro and onion at the end if you want to. I usually do the cilantro, but not always.
By the third time you do this, you won't bother to measure, you'll just put the ingredients in and start tasting.