Flaked corn, also called flaked maize, is a brewing adjunct used alongside malt. A useful first decision is whether you want to replace part of an existing grain bill or add more fermentable material. Work through that choice before adjusting the rest of the recipe.
Why the prepared form matters
Crisp's flaked torrefied maize is heat-treated to gelatinise the starch for use in a mash. The producer describes a lighter body and a corn-flake-like contribution, and lists usage up to 25% for this product. See Crisp's flaked maize page for the current specification.
The BJCP malt and adjunct guide explains why cereal starch preparation and mash conversion matter. A recipe written for prepared brewing flakes does not automatically describe how to use raw corn, cornmeal or a different commercial ingredient.
Replacing grain: a worked example
Suppose your planning target is a 5 kg grain bill with 20% flaked maize. The maize amount is 5 × 0.20 = 1 kg; the other grains total 4 kg. This demonstrates the calculation and is not a complete recipe or a universal dosage recommendation.
If your starting recipe already contains 5 kg of other grains, simply adding the 1 kg bag makes a 6 kg bill. The maize share is then 1 ÷ 6 × 100 ≈ 16.67%. It also changes the total ingredient load. Write “replace” or “add” in your recipe notes to avoid confusing the two plans.
Quick challenge: with 5 kg of other grain fixed, how much maize makes 20% of the final total?
Let the maize be x kg. x ÷ (5 + x) = 0.20, so x = 1.25 kg. Check: 1.25 ÷ 6.25 = 20%. Your equipment and complete recipe still need to accommodate that larger bill.
Plan the comparison around one question
Duplicate the recipe in the Beer Lab. Choose whether the comparison should keep total weight or predicted gravity constant. Use the actual ingredient specification when entering extract potential, then review the model's gravity and water estimates. The grain-bill gravity calculator explains why weight, extract potential, recovery and volume all matter.
What to write in the batch record
Record the product name and lot, maize weight, total grain weight and the percentage calculated from those values. Keep the mash schedule, collected volume and measured gravity with the same record. If you later compare flavour or body, write your observation in your own words. The manufacturer's description is a useful starting point, but it is not a tasting result from your batch.