Oat mash pukin"

[rtalbigr]

Ok mentors run into my first serious problem and I'm stuck.

Made and oat mash of 7# cracked oats, 2.75# malted barley, and 5# inverted sugar with 6 gal filtered water. Added 1 t gypsum. Let mash set for 24 hours with heat belts then seperated off the grains. Added 6 t yeast nutrient and pitch 3 T distillers yeast. Initial SG = 1.072. Final SG = 1.008. Racked of into a carboy and let set for 24 hours. It cleared nicely with about 1 1/2 inch of trub in bottom.

Here's the problem and what I have done to try to correct: Filled pot still to usual level (about 1 1/2 gal wash) to do stripping run and it puked about 3 cups but finally cleared up and ran ok except distilate has green tint. Next batch; ran the wash through a a coffee filter and cut volume in still by 1/3, still puked about 2 cups. Did some research on here on anti-foaming and found several places recommending vegetable oil. Batch #3: Filtered wash through coffee filter. Used 1/3 less than normal volume in still, added a couple tablespoons of vegetable oil, and reduced heat significantly. Puked up an oily mess, about 2 cups worth, just took longer to do it.

Is this puking a characteristic of oats? Never had S*** like this with any other wash.

For batch #4 I have to clean still (lemon juice and salt) gonna cut volume down some more using filtered wash and try again.

What gets me is my wash is clear like all the other washes I've distilled. Can't figure this out.

Big R