[Smar]

I had thought rye was used for sourdough starter outside of Finland also.

Rye based starter can be used for wheat bread without problems, but it may make sense to feed it some wheat beforehand.

Also if you can find Finnish (== white colored) rye flour, consider baking some sourdough Finnish rye bread.

[taneliv]

Oh, I didn't know this about starters. And my mom used to make her own sourdough bread ... although it was of oat, so perhaps the starter was oatmeal as well. I'll have to ask her!