Boil almonds for one minute until skins fall off.

Rinse in cold water.

Dry on a clean towel.

If using a food processor, pulse 3 seconds at a time, so as to not make almond butter.

Process in a Vitamix, pulsing for about 5 seconds at a time on medium speed and then stopping for about 30 seconds. Move the almonds around, making sure to move the almonds from the bottom. This is how I do it; it's less grainy than the food processor.

If using in macarons, you will need the flour very fine and the flour should be sifted.