Step 1 - Mash and Combine
Add the avocado, red onion, jalapeño, lime juice, salt, cumin, and red pepper flake to your shallow mixing bowl. Mash with a fork or potato masher to your preferred consistency some people like it completely smooth, others prefer it chunky with visible avocado pieces throughout. There's no wrong answer here; mash to your own taste.
Step 2 - Add Cilantro, Taste, and Adjust
Stir in the minced cilantro. Then taste the guacamole directly and make any final adjustments:
More lime if it needs brightness or acidity
More cumin if you want more smokiness
More red pepper flake if you want more heat
More cilantro if you want more herbal flavor
More salt if it tastes flat
This tasting step matters more than people expect. The right balance between acid, salt, heat, and herb is what separates forgettable guacamole from the bowl that empties first.