Reddit mentions of Keto Diet Cookbook for Beginners 2019: 5-Ingredients or Less Affordable, Quick & Easy Recipes on the Ketogenic Diet

I was going to say the same thing as above. When we stick to clean and simple keto (meat, veggies, dairy), our grocery budget is way smaller. Though I admit we fall into the habit of buying expensive things like almond flours, keto protein bars, keto pancake mix, etc. It can be easy to spend a lot, but you don't have to! Non-grassfed butter and meat is just fine too, if you're trying to save money.

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If you want a good cookbook with less ingredients, there are a number of of 5 ingredient cookbooks out there for keto too :)