Taco shell, flour
Common food
Photo: Wikipedia
A flour tortilla shell, when baked or fried into a taco shell, transforms from a soft, pliable wrap into a crisp, golden vessel with a satisfying crunch. Its taste is subtly wheaty and slightly salty, providing a neutral yet sturdy base that lets fillings shine. Nutritionally, it's a dense source of energy, primarily from refined carbohydrates and fats.
Calorie split: 7% protein · 42% carbs · 51% fat
↓ Full nutrition💚 Why it's loved
People love it for the essential textural contrast it brings—the shattering crunch against juicy meat, cool salsa, and creamy cheese is iconic. It's the foundational vessel for the beloved, customizable taco experience, deeply embedded in Tex-Mex and Mexican-American food culture.
⚠️ Watch-outs & how to enjoy it better
The refined flour and added fats can lead to blood sugar spikes and are calorie-dense, making it a consideration for those managing blood sugar or weight. To counteract this, fill it with high-fiber beans, lean protein, and abundant vegetables to slow digestion, and practice portion control by enjoying one or two loaded tacos instead of several plain shells.
Key benefits
- Provides quick energy from carbohydrates
- Offers a convenient, handheld eating format
- Acts as a versatile, neutral base for diverse flavors
- Can be a source of iron and B vitamins if enriched
- Its crisp texture adds satisfying contrast to soft fillings
🍽️ Popular dishes
🌍 Where it's eaten
💡 Did you know?
The hard, U-shaped taco shell as we know it was popularized in the United States in the mid-20th century, largely credited to a California restaurant owner who wanted a shell that could stand upright and hold fillings without being held.
Full nutrition (USDA data · scales with serving)
| Water | 6.3 g |
| Energy | 511 kcal |
| Protein | 8.8 g |
| Total lipid (fat) | 29.1 g |
| Carbohydrate, by difference | 53.2 g |
| Fiber, total dietary | 3.8 g |
| Total Sugars | 4.0 g |
| Calcium, Ca | 157 mg |
| Iron, Fe | 3.9 mg |
| Magnesium, Mg | 24.0 mg |
| Phosphorus, P | 222 mg |
| Potassium, K | 135 mg |
| Sodium, Na | 755 mg |
| Zinc, Zn | 0.57 mg |
| Copper, Cu | 0.11 mg |
| Selenium, Se | 24.0 ug |
| Vitamin C, total ascorbic acid | 0.00 mg |
| Thiamin | 0.41 mg |
| Riboflavin | 0.27 mg |
| Niacin | 4.3 mg |
| Vitamin B-6 | 0.06 mg |
| Folate, total | 66.0 ug |
| Folic acid | 55.0 ug |
| Folate, food | 11.0 ug |
| Folate, DFE | 104 ug |
| Choline, total | 8.1 mg |
| Vitamin B-12 | 0.00 ug |
| Vitamin B-12, added | 0.00 ug |
| Vitamin A, RAE | 0.00 ug |
| Retinol | 0.00 ug |
| Carotene, beta | 0.00 ug |
| Carotene, alpha | 0.00 ug |
| Cryptoxanthin, beta | 0.00 ug |
| Lycopene | 0.00 ug |
| Lutein + zeaxanthin | 8.0 ug |
| Vitamin E (alpha-tocopherol) | 1.3 mg |
| Vitamin E, added | 0.00 mg |
| Vitamin D (D2 + D3) | 0.00 ug |
| Vitamin K (phylloquinone) | 18.6 ug |
| Alcohol, ethyl | 0.00 g |
| Caffeine | 0.00 mg |
| Theobromine | 0.00 mg |
Fat & fatty acid profile (per 100g)
| Fatty acids, total saturated | 8.3 g |
| SFA 4:0 | 0.00 g |
| SFA 6:0 | 0.00 g |
| SFA 8:0 | 0.00 g |
| SFA 10:0 | 0.00 g |
| SFA 12:0 | 0.01 g |
| SFA 14:0 | 0.07 g |
| SFA 16:0 | 4.3 g |
| SFA 18:0 | 3.6 g |
| Fatty acids, total monounsaturated | 10.3 g |
| MUFA 16:1 | 0.01 g |
| MUFA 18:1 | 10.3 g |
| MUFA 20:1 | 0.04 g |
| MUFA 22:1 | 0.00 g |
| Fatty acids, total polyunsaturated | 8.2 g |
| PUFA 18:2 | 7.6 g |
| PUFA 18:3 | 0.63 g |
| PUFA 18:4 | 0.00 g |
| PUFA 20:4 | 0.00 g |
| PUFA 20:5 n-3 (EPA) | 0.00 g |
| PUFA 22:5 n-3 (DPA) | 0.00 g |
| PUFA 22:6 n-3 (DHA) | 0.00 g |
| Cholesterol | 0.00 mg |
Amino acid profile (per 100g)
Estimated from Taco shells, baked — USDA does not publish this profile for Taco shell.
| Tryptophan | 0.04 g |
| Threonine | 0.23 g |
| Isoleucine | 0.22 g |
| Leucine | 0.84 g |
| Lysine | 0.20 g |
| Methionine | 0.18 g |
| Cystine | 0.14 g |
| Phenylalanine | 0.29 g |
| Tyrosine | 0.22 g |
| Valine | 0.29 g |
| Arginine | 0.29 g |
| Histidine | 0.17 g |
| Alanine | 0.46 g |
| Aspartic acid | 0.54 g |
| Glutamic acid | 1.3 g |
| Glycine | 0.25 g |
| Proline | 0.77 g |
| Serine | 0.37 g |
| Hydroxyproline | 0.00 g |
FAQ
What's the difference between a flour taco shell and a corn tortilla shell?
A flour taco shell is made from wheat flour, giving it a softer, more pliable texture when soft and a lighter, less gritty crunch when fried or baked. A corn tortilla shell is made from nixtamalized corn, offering a more pronounced corn flavor, a denser, earthier crunch, and is naturally gluten-free.
Can I make these at home?
Yes. You can cut flour tortillas into wedges, lightly spray them with oil, and bake at 375°F (190°C) for 8-10 minutes until crisp. For the classic U-shape, drape the warm, pliable tortilla over the oven rack bars during baking.
Are they a good source of fiber?
Generally, no. Standard flour taco shells are low in fiber, containing about 1-2 grams per shell. To increase fiber, look for whole-wheat versions or fill your taco with high-fiber ingredients like beans, lettuce, and avocado.
Nutrient density (calculated · NRF9.3)
Nutrient Rich Foods index: beneficial nutrients (protein, fiber, vitamins, minerals) minus saturated fat, added sugar & sodium, per 100 kcal.
NRF9.3 index — Fulgoni, Keast & Drewnowski, 2009. Computed from USDA nutrients.
Weight-loss friendliness (composite index)
Energy density 5.11 kcal/g · 7% calories from protein · 3.8 g fiber · 4.0 g sugar per 100 g.
Composite of energy density (Rolls et al., 1999), protein & fiber satiety, minus sugar. A calculated heuristic — ranks satiety-per-calorie, not a clinical measure.
Dietary load (calculated from USDA values)
Potential renal acid load. Positive = acid-forming, negative = alkaline-forming.
Sodium-to-potassium ratio: 5.59 (lower is better — aim for ≤ 1)
Sodium:potassium per WHO potassium guidance. Computed from USDA nutrients.