Modern mixtas should contain the trinity of street food condiments, specifically ketchup and mayonnaise, alongside yellow mustard.
Our take: The original 1930 formula from Mixtas Frankfurt bans ketchup and mayonnaise entirely, relying on mustard and hot sauce to let the guacamole speak. We agree with the founders. Flooding a perfectly good tortilla with sweet corn syrup and warm oil emulsion is a modern mistake that masks the vinegar-sharp cabbage.
- El ingrediente secreto de las mixtas más antiguas de la ciudad
Interviews the current owner of Mixtas Frankfurt on the secret legacy recipe that excludes ketchup and mayonnaise.
- Mixtas Frankfurt: Cómo adquirir el nuevo modelo de franquicia
Confirms the original recipe uses only tortilla, sausage, cabbage, mustard, and hot sauce.
- (PDF) MIXTAS, HOT DOGS Y SHUCOS: APROXIMACIÓN A LAS TRANSFORMACIONES DE LA COMIDA POPULAR DE LA CIUDAD DE GUATEMALA
Academic analysis on how early Guatemalan street food excluded ketchup and mayonnaise before modern commercialization.