Preheat oven to 450°F / 230°C

Combine the water, sugar, and yeast; then set aside.

In a large bowl, mix the flour, powder, soda, salt, and shortening; then gradually add the buttermilk and yeast mixture.

Fold well but do not overwork the dough. On a lightly floured surface pat dough down to about 0.5 inch and cut into biscuit rounds or pretty shapes using large cookie cutters. Place on an ungreased cookie sheet. Bake 10 minutes, or until golden.