Sea bass is one of the leanest, mildest-tasting white fish available and an exceptional source of selenium — a trace mineral that supports thyroid function, which can be affected by the rapid metabolic changes induced by Wegovy and tirzepatide. Cooking en papillote (in a sealed parchment packet) requires zero added fat, steams the fish in its own juices, and makes cleanup effortless — ideal for GLP-1 users with reduced energy. Capers provide a sodium-efficient burst of flavor alongside polyphenols that have anti-inflammatory properties. Avoid butter-poached or pan-fried preparations of sea bass — high saturated fat directly worsens semaglutide-related nausea and slows the stomach emptying that GLP-1 medications already reduce.
Preheat oven to 400°F (200°C).
Cut a large sheet of parchment paper and fold in half to create a crease.
Open the parchment and lay sea bass on one half.
Drizzle olive oil over the fish and season with salt and pepper.
Arrange lemon slices, garlic, cherry tomatoes, capers, and tarragon on top.
Fold the other half of parchment over the fish.
Crimp and fold the edges tightly to create a sealed packet.
Bake for 14–16 minutes until the packet puffs up with steam.
Open carefully at the table — the steam inside is very hot.
Serve directly from the parchment.