In the US they are usually made from corn. In some countries, they are made from rice. In MOST countries, they are made from wheat. It is best to check with the manufacturer.
Yes, although the amount of gluten is significantly reduced from the amounts in wheat flour.
No, meat does not contain gluten.
Yes, they contain gluten.
No they do not.
Ethylvanillin doesn't contain gluten.
yes brain contain gluten
Rice does not contain gluten.
Cheese doesn't contain gluten.
yes they do contain gluten, high processed soy products such as, boca burgers contain gluten.
Yes, but you can buy gluten-free flour.
No it does not.
Yes they contain flour which has gluten