After eating delicious starter, munched meal with one's drinks (9)

'drinks' is the definition.
(lemonade is a kind of drink)

'after eating delicious starter munched meal with one's' is the wordplay.
'after eating' indicates putting letters inside.
'starter' says to take the initial letters.
'munched' indicates anagramming the letters (letters munched or crushed into a new order).
'with' means one lot of letters go next to another.
The initial letter of 'delicious' is 'd'.
'meal' after 'ones' is 'onesmeal'.
'onesmeal' anagrammed gives 'lemonaes'.
'd' inserted into 'lemonaes' is 'LEMONADES'.