ABOUT THIS RECIPEBitter, creamy and fresh in one bite
Belgian endive makes a handy base for a cold starter: the leaves are sturdy enough to eat by hand and have a mild bitterness of their own. That bitterness balances the soft avocado and the gentle sweetness of the crab. Choose Belgian endive with firm, tightly closed leaves and a pale color; the leaves stay nicely crisp and are easy to fill. Belgian endive is available in the Netherlands year-round, with its traditional peak season in the colder months.
Crab meat is soft and delicate, so mix it gently to keep some recognizable pieces intact. Freshly cooked crab meat works, but well-drained canned crab or crab from a chilled pack is practical for this dish. Check the meat for any bits of shell. Don’t use surimi if you want to preserve the flavor of crab: it’s a different product with a different texture. Keep the crab chilled until you make the filling.
A ripe avocado adds creaminess without needing much mayonnaise. Cut it into chunky pieces and fold them into the mixture at the end; vigorous stirring quickly turns the avocado mushy. Lime zest adds fragrant citrus oils, while a little juice brings both freshness and acidity. The acidity also helps keep the avocado from discoloring too quickly, although the color stays at its best when you make the filling shortly before serving.
A small amount of mayonnaise binds the crab and avocado without making the filling heavy. You can replace it with full-fat yogurt for a fresher, slightly less rich flavor; first stir in one tablespoon, and add more only if the filling needs it. A pinch of chili flakes adds gentle warmth, but leave them out if you’d rather taste only the peppery bite of black pepper. Taste before filling: crab can already be salty on its own.
Gently separate the leaves and pat them dry so the filling sits nicely. Serve the boats chilled on a platter, as a starter before a light meal or as part of a drinks spread. Don’t leave them filled at room temperature for long: cover and refrigerate any leftovers, and preferably eat them within one day. The leaves may soften, though, so for the best bite it’s nicest to fill them just before serving.