National French Bread Day bakes up a delicious celebration enjoyed on March 21st. French bread, also known as a baguette, is a long thin loaf made from basic lean dough. Its length and its crisp crust define it. French law has established what is and what is not a baguette. In 1920, a labor law prevented bakers from starting their day before 4 a.m. Bread makers know that breadmaking is a tactile industry. The kneading and resting of the dough are as important as the ingredients. Fresh French bread.