Breton-style pourable caramel au beurre salé sauce
Caramel au beurre salé can refer to sauce, spread or cut confection, and those forms need different endpoints. Here the final form is fixed as a pourable dessert sauce. Sugar is cooked to a deep amber caramel, deglazed carefully with hot cream, brought to 105 °C and finished with cold demi-sel butter. Once cool, it thickens enough to coat a spoon but remains fluid when gently warmed.
The dangerous moment is the cream addition. Caramel at about 175 °C is far hotter than boiling water and sticks to skin. Use a deep pan, heat the cream first, take the caramel off the heat and add the cream in several controlled additions. Even hot cream makes the mixture foam violently, so a long-handled whisk, oven mitts and clear working space are essential, not optional conveniences.
Salted butter is added only after the caramel has cooled to about 70 °C. That timing reduces the chance that the emulsion will split and preserves a cleaner butter flavour. The finished sauce contains perishable dairy, so it belongs in the refrigerator once cooled. Rewarm only the amount needed and avoid boiling it again, which can make the sauce greasy or too thick.


