Direct materials are the traceable matter used in manufacturing a product. The direct materials for a manufacturer of dessert products will include flour, sugar, eggs, milk, vegetable oil, spices, and other ingredients in the recipes. In manufacturing, the direct materials are listed in each product’s bill of materials.
Indirect materials such as oil for greasing the baking pans, etc. will likely be viewed as part of the manufacturing supplies and will be allocated to products along with other manufacturing overhead.