Instead of adding my usual 2 base yogurt's a more sour yogurt and a cream I've used (cap) "creamy yogurt" which does the same with less flavours.
(Fa) "Yogurt (new)" you can control the sourness by raising/lowering the amount, 0.7% (3 drops) produces a creamier yogurt with a touch of sourness; You can use the same amount of (Flv) "Greek yogurt" or (wf) "buttermilk" in it's place.
(tpa) "pear" adds an earthy creaminess that works really well with the brighter "blackberry" combination.
Added 3 drops of (pur) "super sweet"..
Blessings.