Yes that is true, Grocery shopping is just to the meat and fish and green veggies. But we always cook everything from scratch, never went for the mixes. But he can’t have ANY rice either, not even black rice. 20 grams of carbs a day doesn’t allow for any rice. Hopefully eventually he can have the sprouted grain bread again, but none for now. We keep walnuts, and almonds, and cashews, etc. on hand all the time. Cooking is VERY complicated now because we are gourmet cooks and we can’t use ANY of our old recipes. Cutting out ALL flour, rice, sugar, all grains, flour, pasta, potatoes, etc., is hard to do. We bought all new cookbooks. We even made homemade BBQ sauce the other day. It was quite good actually. Tasted more like a spicy Mexican sauce than BBQ sauce. He and I eat same food, and his blood sugar (before the new diet) would be 300 and mine would be 70.
My idea of a meal heavy with carbs is a baked potato every 2 weeks, or 4 ounces of potato chips every now and then.
Having eliminated all gluten containing products from my diet, it's somewhat of a chore to find enough carbs to get as high as 50 grams in a day. 300 grams is normal for the people with those genetic mutations that enable them to eat wheat.