| Bring 150 grams of butter to a boil and wait until the whey separates. |
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Pass the butter through a sieve. |
| Allow one glass of vermouth, one glass of water, half a diced onion, one teaspoon of pepper and one tablespoon of dried tarragon to reduce to about one glass. |
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Pass the liquid through a sieve into a double boiler and add two egg yolks and one tablespoon of lemon juice. |
| Froth up in a bain-marie. |
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Stir in the clarified butter and one handful of dried tomato slices and one handful of fresh basil. |