We used the Silstar Strawberry and Yellow Toffee Groundbait together and the resulting mix was very good. It released a lot of attractant into the water and lasted us several sessions effectively.
These Groundbaits are designed to work very well in paste form so you can get plenty of uses out of them if you have some spare or buy in bulk.
They are available here:
Thanks for reading, hope it helped.
see you in the next one.
~Jack