Problem in turn with tiros cooking Mexican food (8)

'mexican food' is the definition.
Although both the answer and 'food' are nouns, they are not in the same form of the noun. However, I know that 'mexican' relates to this answer.

'problem in turn with tiros cooking' is the wordplay.
'problem' becomes 'rub' ('there's the rub').
'in turn' shows that the letters should be reversed in order (letters turning around).
'with' is a charade indicator (letters next to each other).
'cooking' indicates an anagram (letters cooked up into a new form).
'rub' reversed gives 'bur'.
'tiros' is an anagram of 'ritos'.
'bur'+'ritos'='BURRITOS'

Can you help me to learn more?