Mince the garlic, and remove the core and the seeds of jalapeno. And chop the jalapeno's flesh finely. And set aside.
Over medium heat, place a pan, add butter and allow it to melt.
Now add minced garlic, chopped onion, chopped jalapeno, and salt.
Cook for about 2-3 minutes, until garlic is fragrant.
Now add the flour and stir for a few seconds until the flour gets cooked and slightly changes its color.
And remove from the heat.
And blend it until it turns to a smooth consistency.
Notes
If you prefer more or less heat, add or omit jalapeño seeds and rib, or substitute with bell pepper for no heat.
Leftovers can be stored in an airtight container in the fridge for up to 5 days or frozen for up to 3 months; reheat gently to avoid burning the butter.
If you are using salted butter, then adjust the salt in this recipe.