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US Fish Taco Cost Guide: Portion Math for Fish, Batter, and Slaw

Price fish tacos with cooked-yield math, tortilla counts, and sauce portions. Includes examples for two-taco plates and add-ons.

Published Feb 4, 2026
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Updated Feb 6, 2026
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Fish tacos look cheap. Seafood is not.

Your margin depends on cooked yield, batter absorption, and tortilla count. If you cost by raw weight or ignore sauces, your taco special turns into a weekly loss.


Quick Summary

  • Cost by cooked yield, not raw weight
  • Lock a single fish portion (oz) for every taco
  • Price tortillas, slaw, and sauces as line items
  • Plates protect margin better than single tacos
  • Review prices quarterly as seafood costs move

Why Fish Taco Costing Is Tricky

  1. Fish loses weight during cook
  2. Batter absorbs oil you never count
  3. Tortillas are small but add up fast
  4. Slaw and crema portion sizes drift
  5. Fish prices swing more than poultry

The Core Fish Yield Formula

Cooked yield % = Cooked weight ÷ Raw weight
Cooked cost per lb = Raw cost per lb ÷ Cooked yield %
Taco cost = Cooked fish portion + Tortillas + Slaw + Sauce + Garnish + Packaging
Target price = Taco cost ÷ Target food cost %

Quick test cook example:

  • Raw fish: 10 lb
  • Cooked fish: 7.2 lb
  • Yield: 72%

If raw fish is $5.50/lb:

$5.50 ÷ 0.72 = $7.64 cooked cost per lb

Use the cooked cost for every taco.


Portion Standards to Lock In

  • Fish portion per taco (oz cooked)
  • Batter weight or coating method
  • Tortillas per taco (1 vs 2)
  • Slaw scoop size (oz)
  • Sauce cup size (oz)

Example: Two-Taco Plate

Assumptions (example):

ItemCost
Fish (4 oz cooked total)$1.90
Tortillas (4 small)$0.40
Slaw$0.25
Crema + salsa$0.30
Lime + garnish$0.10
Packaging$0.15
Total$3.10

Target food cost 30%:

$3.10 ÷ 0.30 = $10.33

Menu price: $9.99-$10.99


Smart Add-Ons

  • Extra taco at a margin-protected add-on price
  • Chips + salsa (low cost, high attachment)
  • Fish upgrade (mahi vs. cod) with a clear upcharge

Price Review Cadence (US)

Seafood costs move fast. Use CPI and the USDA Food Price Outlook to schedule quarterly check-ins.



Want This Done Automatically?

KitchenCost recalculates recipe costs, food cost %, and price targets as ingredient prices change.

If you want a faster way to protect margin, try KitchenCost.


Sources

Frequently Asked Questions

Should I cost fish by raw or cooked weight?

Cost it by cooked weight. Do one test cook, measure yield, and use that yield factor in your costing sheet.

Is it better to sell tacos or plates?

Plates usually win on margin because you control sides and can price the bundle. Single tacos are great for traffic but need strict portion control.

How many tortillas per taco?

Two small tortillas are common and reduce breakage, but they also raise cost. If you use doubles, price for it every time.

What food cost % target is realistic for fish tacos?

Many operators aim for 28-35% depending on seafood price swings and whether tacos are a loss leader for drinks.

Try it free — calculate your first recipe cost

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