Prepare the pasta: Roll the buckwheat pasta dough into sheets slightly thicker than for fettuccine. Cut the sheets into strips 1 in. (2.5 cm) wide, then cut the strips diagonally into pieces about 3 in. (8 cm) long.
Prepare the garlic butter: Heat the butter in a small saucepan and add the garlic. Cook until the garlic is golden brown, then strain the butter an