One tray of clams, three Bordier butters, and every row tastes like a different dish. Maison Bordier shucks the clams, gathers the meat into single half shells, shaves a generous curl of flavoured butter over each one, and arranges them in rows of three by color: buckwheat, seaweed, Espelette chilli. Seven minutes in a hot oven and a minute or two under the broiler is the whole cook. The shucking is the work, and it is why this one is labeled difficult.
At a glance
- Difficulty: Advanced, entirely because of the shucking
- Serves: 4, as cocktail bites or as a starter
- Active time: Bordier lists 30 minutes, which we read as covering the shucking and assembly
- Cook: 7 minutes at 220°C / 425°F, then 1 to 2 minutes under the broiler
- Key ingredient: Bordier Buckwheat, Seaweed and Espelette Pepper Butter
Why this works
Bordier calls this a déclinaison, a set of variations, and that is the entire idea. The clams are the constant and the butter is the variable, so one plate lets you taste three flavoured butters against the same ingredient. The trio Bordier suggests is well chosen. Seaweed, the original flavoured butter from 1986, doubles down on the marine note and makes the clams taste more of the sea than they do on their own. Buckwheat, from 2016, brings roasted grain and reads like a breadcrumb topping without any bread. Espelette pepper, from 2008, adds AOP chilli warmth that lifts everything behind it.
Technically this is gratin logic. A shaving of cold butter over a small amount of shellfish in a very hot oven melts down, mixes with the clam liquor left in the shell, and reduces slightly into a sauce that has nowhere to go. The broiler then colors the surface. Because the clams are small and already opened, the cooking window is short and the aim is to warm them through and brown the butter, not to cook them again. Arranging the shells in rows by butter is not only for looks: it is how you keep track of which is which once they are all golden.
Ingredients
Bordier gives two clam counts depending on how you are serving them, and leaves the butter open to your choice. Our suggested amounts are flagged as ours.
| Ingredient | Metric | US |
|---|---|---|
| Clams | 18 for cocktail hour, 32 as a starter | 18 for cocktail hour, 32 as a starter |
| Bordier Buckwheat Butter | A generous shaving per shell (1 block, 125 g, is our guide) | 4.4 oz |
| Bordier Seaweed Butter | A generous shaving per shell (1 block, 125 g, is our guide) | 4.4 oz |
| Bordier Espelette Pepper Butter | A generous shaving per shell (1 block, 125 g, is our guide) | 4.4 oz |
Method
Step 1: Shuck and fill the shells
Open the clams and drain them. Gather all the clam meat into a single half shell, so each shell holds a proper mouthful rather than one lone clam. Top each shell with a generous shaving of your favorite Bordier butter flavors.
Step 2: Arrange by color, bake, then broil
Set the shells in a rectangular baking dish, in rows of three by color if you can manage it: buckwheat, seaweed, Espelette chilli, which gives you three distinct aromas on one tray. Bake at 220°C / 425°F for 7 minutes, then broil for 1 or 2 minutes until golden brown.
Tips from our kitchen
- Chill the clams before shucking. Praires and hard-shell clams grip tightly at room temperature. Twenty minutes in the coldest part of the refrigerator, or fifteen in the freezer, relaxes the adductor muscle and makes the knife go in far more easily. Use a clam knife with a blunt tip, not an oyster knife.
- Keep the liquor, lose the grit. Bordier says to drain, and the reason is that a shell holding liquid will steam rather than gratinate. Drain the shells but do not rinse the meat, or you wash away the flavor along with the seawater. Any sand settles out if you rest the shucked meat in a bowl for a minute before piling it back in.
- Steady the shells with coarse salt. A layer of rock salt in the baking dish holds every shell level so the melted butter stays where you put it. Crumpled foil does the same job at no cost.
- Shave the butter, do not dollop it. Pull thin curls off a cold block with a vegetable peeler. Thin shavings melt evenly across the shell in the seven minutes available. A cold lump sits there and is still half solid when the broiler is done.
- Stay at the oven for the broil. One to two minutes is genuinely the whole window, and flavoured butters carry milk solids and inclusions that catch fast. Buckwheat browns first, so if you are running rows, pull the tray as soon as that row colors.
- About the stated timing. Bordier's header lists 30 minutes of cooking time while the method calls for 7 minutes plus a broil. We read the 30 minutes as total time including shucking and assembly, and we follow the method for the oven.
How to serve it
These want to go from broiler to table without a pause, so serve them straight in the baking dish with the rows still intact and let people pick their way across the three flavors. Small forks or cocktail picks and a bowl for empty shells are all the equipment anyone needs. A cold, mineral white or a dry cider is the right glass alongside. If the three-flavour idea appeals, our Maison Bordier collection is where to pick your trio.
Where to buy Bordier butter in the US
The French Pantry ships Bordier butter across the United States in insulated overnight packaging, straight from the workshop in Brittany.
- Churned Buckwheat Butter by Bordier (4.4 oz): roasted Breton buckwheat, which browns under the broiler like a crumb topping.
- Churned Seaweed Butter by Bordier (4.4 oz): iodised Breton seaweed, the original Bordier flavoured butter and the natural partner for shellfish.
- Churned Espelette Pepper Butter by Bordier (4.4 oz): AOP Espelette chilli in salted butter, warm rather than sharp.
To see the full range side by side, browse the Maison Bordier collection.
Frequently asked questions
How much Bordier butter do I need?
Bordier does not give a weight, only a generous shaving per shell. Our estimate is 5 to 8 g on each, so 32 shells take roughly 200 g in total across the three flavors. Since blocks are 4.4 oz / 125 g, one block of each butter is more than enough for a full tray and leaves you plenty over.
Which three butters should I choose?
Buckwheat, seaweed and Espelette are the trio Bordier names, and they cover toasted, marine and warm. Wild garlic and Kampot pepper or lemon-olive oil both work beautifully with clams if you want a fourth row.
Can I use mussels or oysters instead?
The method suits any small shellfish served on the half shell, and oysters in particular take to seaweed butter. Cooking times shift with size, so watch the tray rather than the clock.
How should I store Bordier butter?
Wrapped and refrigerated, with the paper pressed back against any cut face so the surface does not dry out. Use an opened block within a week or so. It also freezes well, which is useful when you are buying three flavors at once.
Does Bordier butter need to be refrigerated?
Yes. Bordier butter is a fresh, hand-churned product and ships cold. Refrigerate it as soon as it arrives, and keep it cold right up until you shave it, since cold butter is what this recipe needs.
Can I prepare the shells in advance?
Yes, and it makes the evening far easier. Shuck, fill and butter the shells, then keep the tray covered in the refrigerator for a few hours. Take it out while the oven heats so the shells are not fridge-cold going in, then bake as written.
Related reading
- Bordier Butter: What It Is, Why Chefs Love It, and How to Use It
- La Brújula Spanish Conservas
- How to Choose Your French Butter: A Buyer's Guide
Recipe and photograph adapted from Maison Bordier, with thanks. The French Pantry is an authorized US retailer of Bordier butter.