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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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    What exactly is custard in a carton? Can you post a picture? Or at least identify what country you're in? Because in my experience, a spout on a container of custard will have exactly zero utility, so I can't imagine what manner of beast you're talking about. – Marti Jan 6 at 23:34
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    Could you also list ingredients. (I’m thinking it absorbed water from the air) – mroll Jan 8 at 3:04
  • Apologies, I should have been more specific. The carton is this one, from a UK supermarket: sainsburys.co.uk/shop/gb/groceries/custard/… Snipping off the end, the spout, just leaves a small orifice. While custard left exposed, poured over a larger flatter surface, like a plate, leaves it more like water the following day, while the packing version remains thick. – Gabby Jan 8 at 15:18
  • Ingredients: Reconstituted Skimmed Milk (from Cows' Milk); Sugar; Modified Maize Starch; Vegetable Oil (contains: Palm Oil, Coconut Oil); Flavouring; Stabiliser: Sodium Triphosphate; Colours: Beta-carotene; Paprika Extract. – Gabby Jan 8 at 15:19
  • photo: i.postimg.cc/sgJxmqZR/custard.png – Gabby Jan 9 at 3:58

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