Start w/ the avocado mess & add ground cumin or cground coriander & whisk.
Add lemon juice or lime juice & whisk.
Mash the clove of garlic & add it.
Mince the chili (discard the seeds) & add it.
Chop the tomato (discard the seeds & the pulp!) & add it.
Chop the spring onion & add it.
Mix w/ a spoon.
Add salt & pepper to taste - once again.
Chop the fresh cilantro & scatter on top - optional.