I never have the easiest time trying to mix from flavors in common, but its Tims Birthday so it must be done! This may not get loads of points for creativity, but balancing out a nice Marble is a goal of mine. I decided I would approach it like a Cake batter Milkshake.
I started with my Milkshake Base with one change. I swapped SSA Ice Cream Vanilla for FW VBIC because I know its Tim's favorite Ice Cream. Simply Cake and Ultimate Cake Batter for Vanilla Cake, then Chocolate Deutsch and Chocolate Frosting for those swirls of chocolate. I went with Cap Super Sweet because I feel like it pushes chocolates forward a little better. I went slightly sweeter than the usual. 50% but adjust to your taste of course. If I'm right, this should end up as a Nice Cake Batter Milkshake, with just enough chocolate swirl to break up monotony and an overload from too much Vanilla. Something Tim and I have discussed several times.
This will absolutely be a steeper. Happy Birthday Tim!!