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Dear Listmates,
I have the following restaurant card in Spanish for my upcoming trip

Por orden medica me esta prohibido ingerir alimentos que deriven de:
trigo, avena, cebada y centeno por lo tanto nada que sea apando o
espesado con harina.

 - Maiz, arroz, patatas, verduras, carne etc.estan permitidos
en mi dieta asi tambien sopas y salsas espesadas con maicena o harina
de patatas. Muchas Gracias !

A translation of the above would make me more sure of its contents
 and perhaps someone could suggest a version that is more
 explicit or expansive such as no soy sauce etc.

Thanks in advance (muchas gracias).

Sophia