The invention discloses a preparation method for a coarse cereal-fruit-nut-
vegetable food, which comprises the following steps: (1)
whole grains are sequentially extruded by double screws and baked, so that a crisp whole grain material is obtained; (2)
sugar and water are boiled into syrup; (3) after being uniformly mixed, the syrup and the crisp whole grain material are baked and cooled, so that an aromatic and crisp whole grain material is obtained; (4) the aromatic and crisp whole grain material, dehydrated fruit granules, roasted nut granules and vacuum-fried vegetable granules and / or
pressure difference-puffed vegetable granules are mixed, and thereby the nutritional food mixed with coarse cereals, fruits, nuts and vegetables is obtained. The
nutrition of the prepared food is balanced and scientifically formulated, the coarse cereal-fruit-nut-
vegetable food can provide
nutrient substances which are needed by the
human body daily, moreover, the taste of the food is aromatic and crisp, the original tastes of the grains are kept, and in combination with the fruits, the nuts and the vegetables, the taste of the product has the original taste of the grains, the
aroma of the fruits, the after-taste of the nuts and the faint scent of the vegetables.