If you purchased the wine with a credit card then Facebook has the ability through agreements with other data providers/aggregators to connect it back to your Facebook, Instagram, etc account. Source: I know someone who is in biz dev at one of said companies and sells this type of “profile” data to Facebook and countless other companies. If you purchased with cash then sure does sound like they were somehow listening.
Hmm, I did. But her bottle was a leftover from a wedding several months ago (because we're connected on IG perhaps? Seems like quite the stretch though).
Also surely advertising the same wine I just bought to me is... dodgy ROI at best?
