"A comida que minha avó faz é incrível."

Translation: The food that my grandmother makes is incredible.

[grayfox117]

The food that my grandmother MAKES is incredible.

[legatrix]

I agree with this

[andreaparker]

'that' can be omitted in English

[Lingodingle]

True, that is common practice but grammatically the "that" introduces a phrase within the sentence. Remembering that it should be there helps to remember to put the "que" in the Portuguese sentence.

[lingua]

The food my grandmother makes is incredible.

[Shortplanks2009]

agree too - in english you make food, not "do" it

[davidalso]

Depends on how close you are to your cooking.

[LambKen]

As an English speaker, 'the food which my grandmother makes is incredible', is a more traditional (old fashioned) translation. It should be acceptable.

[Darkmind2]

Given we're leaning Portuguese and not English, "which" must also be accepted. May be as a typo if it's so bad