Key findings
- 1Traditional flour tortillas have four ingredients; commercial brands list far more
- 2In our analysis, flour tortillas average 20.7 ingredients and a Processing Score of 8.8, which is Level 4
- 3Sodium stearoyl lactylate prevents starch retrogradation; the natural stiffening process that makes fresh tortillas go stale
- 4Tortillas from local tortillerias or the refrigerated section tend to have simpler ingredient lists
Why is Flour Tortillas ultra-processed on average?
A homemade flour tortilla is remarkably simple: flour, water, lard or oil, and salt. The dough is rolled thin and cooked on a hot griddle for 30-60 seconds per side. The challenge for commercial producers is that fresh tortillas stiffen and crack within hours as starch retrogrades (recrystallizes). To keep tortillas soft in a bag for 3-4 weeks, manufacturers add sodium stearoyl lactylate (softener that slows starch retrogradation), potassium sorbate and calcium propionate (mold inhibitors), mono/diglycerides (emulsifiers), and fumaric acid (pH control). Commercial brands list far more ingredients than the four a tortilla needs. In our analysis, flour tortillas average 20.7 ingredients and a Processing Score of 8.8, which is Level 4.
How 631 flour tortillas products break down
Share of products at each processing level, in our analysis.
Flour Tortillas brand comparison
From least to most processed in our database.
How to read a flour tortillas label
- 1
A real tortilla needs only flour, water, fat (lard or oil), and salt, four ingredients
- 2
Sodium stearoyl lactylate keeps tortillas soft but is an industrial additive
- 3
Potassium sorbate and calcium propionate are preservatives for shelf life
- 4
Short shelf life (5-7 days, refrigerated) indicates fewer preservatives
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Frequently asked questions
Are Mission flour tortillas ultra-processed?
Mission flour tortillas list additives such as sodium stearoyl lactylate, mono/diglycerides, potassium sorbate, calcium propionate, and fumaric acid, significantly more than a traditional tortilla of flour, water, fat, and salt. Each Mission product page shows its own score.
Why do store-bought tortillas stay soft so long?
Sodium stearoyl lactylate slows starch retrogradation, the natural process where starch molecules recrystallize and cause stiffening. Without it, flour tortillas would stiffen within hours. Preservatives prevent mold during the extended shelf life.
Are flour tortillas worse than corn tortillas?
From a processing standpoint, yes. Corn tortillas need only three ingredients (masa, water, lime). Flour tortillas structurally require added fat and commercially require softeners and preservatives, which makes them more processed. In our analysis, flour tortillas average Level 4.