GoMacro Protein Bars

Shalom Rabbi, Intuitively it seems that the following should be kosher for Passover and I am wondering in general about items that are certified gluten-free. Can we rely on that? Also I have been confused about buying things before Passover versus during Passover....

Irene S

Is Trader Joe’s Sauerkraut suitable for Passover? Ingredients: Cabbage, Persian Cucumbers, Sea Salt, Garlic