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Copper Sun Companion Series

Avocado tuna salad in lettuce cups

June 8, 2026 · 1 min read

Six little-gem lettuce cups filled with avocado tuna salad, a lemon wedge alongside
Serving suggestion — your result will vary

When you want lunch with no cooking and no plan, this is it. Avocado does the job mayonnaise usually does, so the salad stays creamy while the carbs stay low. The whole thing comes in around 5g net carbs.

1 servingPrep 5 min~5 g net carbs / serving

Ingredients

  • 1 can tuna (in olive oil or water), drained
  • ½ a ripe avocado
  • ½ a lemon, juiced
  • 1 small celery stalk, diced (optional, for crunch)
  • 6–8 small lettuce leaves (little gem or romaine hearts)
  • Salt and pepper

Steps

  1. Mash the avocado in a bowl until it's mostly smooth.
  2. Add the tuna, lemon juice, and celery. Fold it together and season.
  3. Spoon into the lettuce leaves and eat with your hands.
Per serving (approx): 5 g net carbs · 30 g protein · 19 g fat · ~311 cal

Notes

Eat it the day you make it — mashed avocado browns overnight even with the lemon. If you want it richer, stir in a spoonful of olive oil or mayo; neither adds carbs. Already eaten today? Copper Keto Companion tells you whether this still fits before you open the can.