Below are photos and the recipe we came up with for the counter top. This will be very similar to the recipe we use for the floors which are going in soon. Both the counters and floors when fully dry will be finished with oil and beeswax to protect and harden to a soft-wood like finish.
(Some wheat growing towards the window)
36 cups silica sand
12 cups red clay (archie bray)
8 cups wheat paste
1/2 cup borax