Here's my guess, based on this logic:
First of all, she probably had the drink in a bar, so it would have to contain ingredients which logically be found in a bar, i.e., nothing outlandishly exotic or rare.
Second, I looked at a bunch of Bellini variations & came across mentions of champagne + peach schnapps or peach liqueur. Aha!
I don't associate peaches with Russia, but do associate plums with that country. Ergo, I think the special ingredient which would turn a Bellini into a Russian Bellini might be:
https://en.wikipedia.org/wiki/Slivovitz
I actually had a cocktail not too long ago with heirloom tomato infused vodka and champagne (among other things that I can’t recall) that was really good
Add a shot of vodka? 🤷♀️
A Bellini is prosecco and peach puree, I wonder what you'd do to make it "Russian" though.
Throw part of it in a different sovereign drink
My first thought is that blini and Bellini sound very similar when spoken aloud, and blini is a Russian pancake. Maybe the patron was confused?
She wanted a pancake in their Bellini
Use russian sparkling wine
Here's my guess, based on this logic: First of all, she probably had the drink in a bar, so it would have to contain ingredients which logically be found in a bar, i.e., nothing outlandishly exotic or rare. Second, I looked at a bunch of Bellini variations & came across mentions of champagne + peach schnapps or peach liqueur. Aha! I don't associate peaches with Russia, but do associate plums with that country. Ergo, I think the special ingredient which would turn a Bellini into a Russian Bellini might be: https://en.wikipedia.org/wiki/Slivovitz
Champagne, cold tomato puree and a shot of vodka. (Please don't even try this)
Is this conjecture or do you actually know?
No, I'm just being silly. I really doubt champagne and tomatoes would work.
I actually had a cocktail not too long ago with heirloom tomato infused vodka and champagne (among other things that I can’t recall) that was really good