Went to a gardening store to pick up some rosemary and thyme (since I still have more than enough of sage and parsley;)) and found these beauties: a white(ish) Echeveria sold under a moniker "Queen", and a beautiful plump Pleiospilos nelii. First new succulets this season - looking forward to seeing them grow!
It's not mochi, but there's a type of Japanese sweets that can be made to look quite similar - they're called nerikiri: https://www.foodinjapan.org/kanto/nerikiri/