
Q) I need to substitute vegetable shortening
A) I would use butter. For every cup of shortening substitute 1 cup + 2 tablespoons butter. This is because butter has water in it and shortening does not. But your biscuits will be good! Not healthy, but good!
I got butter in 40 supermarket yesterday, it was in the chiller under the deli counter so not on show when a lady came in & asked for it & I remembered I was getting low. It was either 27 or 29/kg I think, sorry I have thrown the wrapper away

Good luck with the cooking.