vintage bowl of dry oat flakes and walnuts on white wooden background. healthy breakfast concept. open

background bio bowl breakfast cereal close closeup concept cook copy cuisine day deep diet dietary dieting dish dry energy flakes food grain hard health healthy ingredient kernels lifestyle light lightnn macro meal morning natural nature nutrition oat oatmeal oats organic porridge raw rustic seed shadowsnn snack space table texture uncooked vegan vegetarian vintage walnuts white whole wholegrain wooden