Bring one cup water to boil in a small saucepan and add chiles, garlic and onion. Cover, then reduce heat and summer until chiles are very tender when pierced (about 15 minutes).
Whirl chile mixture in food processor with vinegar and salt until smooth.
Set mixture aside.
Create the mild salsa
Pulse all ingredients except tomatoes in food processor until minced, about 5 pulses, scraping the sides of the container as needed.
Add tomatoes and pulse until roughly cropped, about 2 pulses.
Create versions with different heat intensity
Separate the mild salsa into 3 equal parts.
Add the following amount of habanero mixture to add “heat” to the salsa:
Mild: 1/8 tsp
Medium: 1/4 tsp
Hot: 3/8 tsp
Freeze the remaining habanero mixture. Write the date on the container prior to freezing. And use for subsequent salsa recipes. Discard remaining mixture after 10 months.
Refrigerate the finished salsa to allow habanero spice to permeate the mixture. Serve chilled.