Stockyard Sandwich Co. brunch pop-up

What Their Spring Garden restaurant's not open yet, but the folks behind this forthcoming farm-to-sandwich spot (sorry) are showing their stuff at a special brunch in Grays Ferry.
Where Devil's Pocket Food & Spirits at 2425 Grays Ferry Ave. 19146
When April 23, 2016 at 11:00 am to 3:00 pm