There was a local sale in Brandon today for authentic Ukrainian products (food and more).
Sorry you missed it, but the local group offers frequent seasonal sales like this at the Ukrainian Reading Hall on Stickney Avenue, This is the local Ukrainian group's Facebook Page called:
Ukrainian-Canadian Association "Tryzub". It's a public group so if you don't have a Facebook account, you can likely just Google it. Maybe you can contact them if they offer sales after the event. The hall itself has a local number and might be able to guide further. (204) 727-7144
From their FB page:
December 14th we are having a great Christmas Market and Bake sale of homemade Ukrainian (and not only) food. Great event, lots of delicious food items to shop for, right for your Christmas table. There also be lots of handmade Christmas decorations and other souvenirs available to purchase. All proceeds from the sale is 100% going to support Ukraine. Come to support this great cause and get yourself a most tastiest treats for Christmas
When - December 14, Saturday
Where - Ukrainian National Hall , 1133 Stickney Ave.
Time - 11am-1pm
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There was another Ukrainian restaurant located in the Town Centre [800 Rosser] - easy access off 7th Street east side of building where stairs or an elevator takes you to the food court. I'm not sure if it's still there, but the food is reported to be really good.
https://ukrainiancuisine.food74.com/
I hope this helps somewhat or maybe others can offer further help.