Can you help me with this words?

Hi!!!

I am reading a text which talks about a restaurant called "Casa Paco" and there are some words I didn't find in the dictionary.

one sentence of the text says:

..." the menu offers an incredibly wide selection of dishies ranging from classic tortillas to the exquisite daily specials conjured up on the spot by Paco and his wife Laura."
what is the meaning of "conjured up on"??

..." the meat succulent and done to a turn..."
DONE TO A TURN? WHAT DOES IT MEAN?

PLEASE help me

Thank you very much.

x x x x x x x
---------Ana Laura------------

[Tdol]

1 Produce quickly, as if by magic
2 Cooked perfectly