I saw that show too and wanted to know so I kept trying different recipes until I combined 2 different recipes.
Now I don't know if these taste like hers because I have never tasted them, although I have considered taking a trip just to see...
Before starting this, take your pan (I like to use a small cast iron skillet) and melt enough butter to coat the bottom, then stick the pan in the freezer so that it will harden.
I kept trying to use bread flour or regular flour and add the rising ingredients but I just could NOT get biscuits that would rise high.
Then I tried self rising. I just bought the cheap off-brand.
I used about 3 cups, a little salt, then cut in 1/2 stick of real butter (I have also used Criso). Depending on if the grains were right I may add more if needed.
Added milk until just wet. The key is not to overwork the dough. Throw some flour down and on the dough and just pat to about 1/2 inch thick.
Cut and put into pan, sides touching. Brush tops with melted butter.
Bake at 400 until golden brown. These things will rise pretty high.