Broiled Maine Oysters Recipe

Start with well-chilled oysters. Rinse the shells under cold running water and scrub to remove grit. Place ice in a tray and arrange oysters on top to keep cold while you prepare the custard.

Shuck the oysters if you prefer them served in deep half-shells for broiling, or you can have the fishmonger shuck them leaving the oyster in the bottom shell and the top shell removed. If shucking yourself: hold oyster flat side up, insert an oyster knife at hinge, twist to pop, run knife under the top shell to free, then cut the muscle to free oyster from bottom shell. Keep oyster liquor in the shell.

Place the shucked oysters onto a rimmed baking sheet filled with a bed of coarse kosher or rock salt to stabilize shells and prevent tipping during broiling.

Make miso base

Whisk together the white miso, mirin, and sake in a small bowl until smooth and no lumps remain. This loosens the miso and balances saltiness and sweetness.

Heat cream

In a small saucepan over medium-low heat, warm the heavy cream until it is steaming and just begins to simmer at the edges (do not boil). Remove from heat.

Temper and combine

In a medium bowl, whisk the egg yolks with the sugar and salt until smooth. Slowly pour about one quarter of the hot cream into the yolks while whisking constantly to temper. Continue whisking and slowly add the remaining cream. Whisk in the miso-mirin-sake mixture until fully incorporated and smooth. Taste and adjust: custard should be savory with a gentle sweetness—add a touch more mirin or 1/4 tsp sugar if needed.

Strain custard

Pass the custard through a fine-mesh sieve into a clean bowl or measuring cup to remove any coagulated bits and ensure a silky texture.

Portioning

Using a small spoon, put approximately 1 to 1 1/2 teaspoons of the miso custard atop each oyster, keeping a thin layer so the oyster still reads through and cooks quickly under the broiler.

Preheat the broiler (high) and position the oven rack so the oysters will be 3–4 inches from the broiler element. Line a baking sheet with foil if desired for easier cleanup and fill with the prepared bed of coarse salt to stabilize shells.

Brush a tiny bit (about 1/4 tsp) of melted unsalted butter over each custard-topped oyster (this encourages browning). Slide the tray under the broiler and broil 2–4 minutes, watching closely: the custard should puff slightly and develop light golden brown spots but not burn. Timing depends on your broiler; check at 90 seconds.

While broiling, combine 3 tablespoons ponzu with 1 teaspoon kewpie mayo and 1/2 teaspoon toasted sesame or truffle oil in a small bowl; whisk until emulsified. This will be drizzled sparingly after broil for brightness and umami.

Remove oysters from broiler. Immediately drizzle about 1/2 teaspoon of the ponzu-kewpie blend over each oyster, or serve the sauce at the side for guests to add. Scatter thinly sliced scallions and small slivers of shiso or microgreens over oysters. Optionally sprinkle a few bonito flakes that will gently move from residual heat for aroma.

Serve oysters on the salt bed over ice or in a shallow platter with lemon wedges on the side. Provide toothpicks/oyster picks for easy eating. Suggest finishing touches: an extra small splash of straight ponzu at the table if more acidity is desired.

Serve immediately while custard is warm and oysters are still hot. Leftovers of custard can be kept refrigerated up to 2 days; do not reheat custard in the shell — rewarm gently if needed and remake atop freshly shucked oysters.

Safety note: use very fresh oysters and keep them cold until broiling. Broiling cooks them quickly—if you prefer fully cooked oysters, extend broiling by 1–2 minutes but watch for overcooking which will toughen them.