Beurre monté including as a sauce, as an ingredient for other sauces, as a poaching medium, or as a resting medium for cooked meat. In order to make a "beurre monté", boil a very small quantity of water, i.e. 15–60 mL (1–4 tablespoons). Once water has come to a boil, turn the heat down and start whisking the cold butter into the water, one or two chunks at a time. Add more butter whenever the chunks have melted. Once the emulsion is started, more butter can be added at a time. Continue adding butter while whisking until one has the desired quantity
Petit-Beurre is smooth and has twenty-four indents (four lines with six columns) intermixed with the inscription "LU PETIT-BEURRE NANTES" in three lines. The characters of the writing are intended to be a reminder of the writing books that the grandmother of one of the creators of Le Petit Beurre would read. The biscuit is watered with milk before baking to get a "homemade" look. The thickness of 8 biscuits is equal to the width, which allows a square packaging. At its plant in La Haie-Fouassière, about twenty kilometers south of Nantes, LU produces over 9,000 tons of VPB a year, about