What I did is just put some gummi bears (like a bag and a half) in a big jar with a tight sealing lid, then pour in raspberry vodka about 3/4 up the side of the container. Put on the lid, shake shake shake, and put in the fridge. Shake the jar and flip it over 2 or 3 times a day. When the vodka is all absorbed you can add more. We started them like 6 days ago and I've added vodka 3 times. You keep doing this until the bears are soft all the way through, then they're done! And if there's any extra vodka in the jar when they've softened you can pour it out. It's supposed to take about a week for the bears to soften completely and they'll stay good in the fridge for a while.
Important: Keep the gummi bears refrigerated or they'll turn into sludge, use a jar that holds at least like 3 times as many gummi bears you have because the bears absorb the vodka and get bigger, and remember to shake up the jar.