... the ingredients.
From The Evening Standard:
Police in London are urging shopkeepers to refuse to sell eggs and flour to under-16s in the run-up to Halloween in case they use them to target the homes of elderly and vulnerable residents.
The crackdown has been launched in King's Cross, where police said in previous years youngsters had mixed the ingredients to rustle up mischief.
In a letter, pinned up to a shop front in King's Cross, officers from the area's Safer Neighbourhood Team (SNT) asked shopkeepers to volunteer not to sell the household staples to under-16s in the week before Halloween.
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