1/4 cup mayonnaise
1 Tbls sour cream
2 to 4 tsp minced fresh parsley
1 to 1 1/2 tsp chopped fresh dill
1/8 tsp garlic powder
1/4 tsp chopped fresh thyme
1/8 tsp pepper
Dash cayenne pepper
1 can water packed tuna, drained and flaked
2 Tbls chopped red onion

Whisk the first eight ingredients then stir in tuna and onion.