Reoccurring residue on one dish
I used one of my porcelain bowls several months ago to soak something in baking soda and vinegar. Since then, every time I wash it it comes out of the dishwasher with a crumbly white residue on it. The dishwasher does a perfect job on other dishes.
This occurs no matter which temperature I wash the bowl with. Even if I wash the residue off by hand and dry it (and it looks sparkly clean when put away), when I check it a day or so later, the residue is back.
Any ideas as to what the residue is and what I could do to get rid of it once and for all?