Mole verde and pipián — pepita and herb sauces

Pre-Columbian Mexico. Pepita-based sauces appear in the earliest colonial-era descriptions of Aztec court cooking.

Mole verde and pipián verde are related but distinct green sauces from Central Mexican tradition — both use toasted pumpkin seeds (pepitas, Cucurbita pepo) as a thickening and flavouring agent alongside tomatillos, fresh herbs, and green chiles. Mole verde uses a broader herb and chile base (Mexican epazote, hoja santa, cilantro, serrano or jalapeño, green tomatoes, tomatillos) blended with the ground pepitas; pipián verde is more specifically pepita-forward, with the ground seeds providing both the body and the primary flavour. The pepita technique is critical: raw pepitas are toasted in a dry skillet until they begin to puff and turn light golden — over-toasting produces bitterness; under-toasting produces a raw, grassy flavour. The toasted pepitas are ground in a spice grinder or blender to a fine powder before being incorporated into the sauce. This ground pepita meal acts as both flavour base and starch-free thickening agent — the same principle as French nut-based sauces (romesco) or Circassian chicken (walnut sauce).

Mole verde and pipián have a unique flavour profile: nutty from the toasted pepitas, sharp from the tomatillo, herbaceous from epazote and cilantro, and gently spiced from the fresh chile — one of the most distinctly flavoured of all Mexican sauces.