This is a base ingredient, not a finished dish—the five-minute time is accurate only if you already own all three flours. Millet flour, sweet rice flour, and potato starch are specialty items not stocked routinely at Harris Teeter, Food Lion, Publix, or Walmart in Charlotte; you'll need a trip to ALDI's bulk section or a natural-foods store like Trader Joe's or Whole Foods. The cost per serving drops dramatically if you're making a large batch for multiple recipes, but a single use defeats the economy. Best suited to someone already committed to gluten-free baking who can batch this and store it, not a weeknight solution.