Popped by today after hearing about it online! I recommend to take Exit H/G from Outram MRT to reach there. The place is really quite small though, so takeaway is best! The person serving me was patient and helped recommend me what flavor to purchase.
As for the jar cake itself, the flavor was really great - delicate balance of tartness and sweetness, just enough lightness and a good fluffy texture of the cake coupled with the smooth slightly creamy mousse.
Will frequent here again to takeaway for family and friends! It can be a great surprise treat for a loved one too!