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Thanks to everybody who answered. Here is the summary to my question if
baking soda is gf:
If it is 100% baking soda it is gf.
It's the baking powder which may contain wheat starch, so check label,
GF baking powder brands: magic, calumet, rumford
You can make your own baking powder by mixing two parts cream of tartar
with one part bicarbonate of soda.
Nick Dordea
DBA/Software Analyst
Toronto, Canada
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