Steam envelops hot drink (3)
I believe the answer is:
tea
'hot drink' is the definition.
(I know that tea is a type of hot drink)
'steam envelops' is the wordplay.
'envelops' indicates a hidden word (some letters contained or enveloped by the clue).
'TEA' is hidden in the letters of 'steam'.
(Other definitions for tea that I've seen before include "(Infused) drink; meal" , "Infused beverage" , "Principally" , "Strangely, one may eat this drink" , "Food" .)