I Michael,
Becoming beekeeper we will making bo bo’s
along the path to becoming “Great Beekeeper” if n when we get there… Mistakes will happen as we are all learning along this path…
Odd taste on the Honey is a small Boo Boo so don’t sweat the small stuff. As I often say, it’s a learning curve. At least you have several options for the unique “Flavored” liquid gold. All is not a waste n I’m guessing you won’t do this twice. So put this unintentional Wrong “Behind You” n move on keeping the info in your “Not Do Again List” of experiences.
Glad the folks here could help you. And Yes, there’s still a large pockets of prejudge n misinformed old Beekeepers out there that can’t move on n get it in their Pea Picking Brains that using a Flow-hive ain’t no different until using the Plastic frames n Flow-super. I’d guess a number use or have some plastic foundations or frames in their own hive system. Just keep you mouth shut about the “Flow-Supet”. Just glean from their years of beekeeping experience ! Most of us have bumped up again the beekeeping Ignorance n have survived. Or like me … At 72 years old … I really don’t give a S---- ! I’ve rubbed shoulder with ignorance in many fields thru-out my life n lived to live another day. Just bite your lips n learn n do your Beekeeping Thing. 
Aren’t we having FUN yet ?!? 
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Welcome abroad bro… Keep on keeping on !
Cheers,
Gerald