This garlic mayonnaise is especially made for bourride. Don’t skimp on the garlic: It punches up the seafood soup. If you are careful to add the oil drop by drop, the sauce will thicken nicely.
Rinse a stone or ceramic mortar or a heavy ceramic bowl in hot water and dry thoroughly. Add the garlic and sea salt. Use a wooden pestle to pound them to a smooth paste.
Add the egg yolks and stir with the pestle until thick and blended. Very slowly add the olive oil, drop by drop as if you were making a mayonnaise, stirring vigorously and continually in one d