Dear Rav,
You year-round list says, “All 100% Beer is OK.” However, when I look up various lists by major kashrut agencies, they have a list of brands to avoid.
One particular example was Sierra Nevada Pale Ale, where one site said it was because of chameitz she’avar alav happesach. Is this a valid concern?
And are there issues with purchasing from a local microbrewery, as long as you avoid grape-derived flavorings and milk-derived flavorings?
One final question: beers that are flavored with seemingly-neutral ingredients, like spices, pareve chocolate, or fruit; do they need hashgachah or no?
Thank you so much,
Eliran
J Shalom 
Max Namer
Thank you for that info.
Ignore it all.
All beer is fine.
Chametz Sheavar alav haPesach is derabanan and the max that you have is a safek. So it is fine.
Grape juice is not a problem.
Milk flavored ingredients are kosher and not common if exist at all.
All beer is fine.
Enjoy.