Another oatmeal person here. Steel cut oats in the winter, and raw oats with fruit and milk/buttermilk in the summer. It gives me the fuel for a long ride or for a short one.
I cannot ride after eggs. I have tried riding after eggs and my body just goes into shut-down-and-digest-eggs mode. I ride like a tortoise.
Absolute worst: ice cold chocolate milk, gulped down fast mid ride on a hot day. I thought I was going to throw up.
Chocolate milk after ride is perfect.
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Zero gallons to the mile