<<Disclaimer:  Verify this information before applying it to your situation.>>

> Is it true that white pepper and curry powder contain flour?
> What other spices are unsafe?

In the UK pure spices like pepper are OK, but a spice mixture like curry
can have flour in it as a filler. I prefer to make curries from pure
spices, using authentic recipies, so I don't make curry powder as such.

   Tim