Brown Gravy

Bahan-bahan (4 porsi)

• 1 teaspoon vegetable oil (or butter)
• ½ onion (diced)
• 2 cloves garlic (minced)
• ½ teaspoon dried thyme leaves
• ¼ cup butter
• ¼ cup all-purpose flour
• 1 ¼ cup condensed beef broth
• salt and pepper to taste