Why does custard go runny if left exposed in the fridge, what is the chemical reaction?

Why does custard go runny if left exposed in the fridge, what is the chemical reaction? - Chemical test with empty flask mounted on ring stand while burner under flask and tubes filled with reagents in modern lab

If I leave opened custard in a carton with just the spout open the custard remains thick the next day, but spread out on a plate its like water the following day.

Is it water inside the environment?

UPDATE: 7 days later : the custard from the same carton opened is still thick!






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Why does tinned custard go watery in the fridge?

There could be a couple of reasons, but one possible culprit is the moisture in the fridge. If you've made the custard from the box (or a packet), it can continue to absorb moisture from the environment. Always make sure to wrap the bowl tightly before you place it in the fridge.

Does custard set in the fridge?

Custard doesn't normally set unless it is left to go cold. I normally mix the custard powder & sugar in a jug with a small amount of milk and warm up the rest of the milk in a pan.

Does custard thicken in fridge?

One way to combat a custard that will not set is to reboil it. If you thought your custard was thickening up, and then refrigerated it to let it set, only to find that it had thinned out, simply pour the custard base back into a pot and cook it more (via Crafty Baking).

How long does opened custard last in fridge?

Store in a cool, dry place. Once opened keep refrigerated and consume within 3 days.



How to correct watery custard using Birds custard powder| 2 methods using boiled hot water




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