Bolognese without plum

1 tablespoon unsalted butter 1 small onion, chopped 1 rib celery, finely chopped 1 carrot, finely chopped 2 pounds lean ground beef Salt and pepper Pinch of[...]

itemscope itemtype="http://data-vocabulary.org/RecipeIngredient"> 1 3/4 cups chopped onion 2/3 cup chopped celery 1/2 cup finely chopped carrot 6 garlic[...]