Saturday morning pancakes are a ritual in my house. But Saturday morning me is not a morning person. Saturday morning me wants to roll out of bed and pour batter, not measure flour with one eye open.

So I tried making pancake batter the night before. The next morning it was gray. Gray pancakes. I served them anyway and my kid asked why the pancakes looked sad. Fair question.

Why pancake batter turns gray overnight

Baking powder is the culprit. Specifically, the aluminum compounds in some baking powders react with the liquid in the batter over time. That reaction — the same one that makes pancakes fluffy — keeps going in the fridge. By morning, the batter has oxidized and turned an unappetizing gray-blue. It still tastes mostly fine, but nobody wants gray pancakes.

The three rules for overnight pancake batter

1. Use aluminum-free baking powder. This is the single biggest thing. Brands like Rumford or Bob’s Red Mill make aluminum-free versions. The label will say so clearly. Aluminum-free baking powder does not turn batter gray no matter how long it sits.
2. Mix dry and wet separately. Combine all your dry ingredients in one bowl and all your wet ingredients in another. Store them separately in the fridge overnight. Mix them together in the morning. This takes thirty seconds and guarantees no gray batter even with regular baking powder.
3. Hold the baking powder until morning. If you must mix everything together the night before, leave out the baking powder and baking soda. Stir them in right before you pour. The batter will be a little thicker in the morning but works fine.

The buttermilk bonus

If you use buttermilk in your pancakes, overnight actually helps. Buttermilk batter that sits overnight develops a slightly tangier, more complex flavor. The acid in the buttermilk keeps working on the flour proteins. Your pancakes taste richer and more nuanced in the morning than they would fresh. Restaurants do this on purpose.

Just use aluminum-free baking powder so the flavor upgrade is not accompanied by a visual downgrade.

What to avoid

• Do not add fruit to the batter overnight. Blueberries and bananas will bleed into the batter and make it a weird color — gray plus purple is a truly unfortunate combination.
• Do not use expired baking powder. Old baking powder loses its lift regardless of when you mix it. Test it: drop a pinch in hot water. If it does not fizz immediately, replace it.
• Do not overmix in the morning. A few lumps are fine. Overmixed pancakes are tough and flat.

I have done this every Friday night for over a year. Saturday morning me pours beautiful golden batter while half asleep. The kid has stopped asking why the pancakes look sad. Small victories.