I builty a cooler 3Gal MLT using SS braid and did an Oatmeal stout over the weekend. Other than needing a better thermometer I think it went well. I was 2 or 3 pts below my target OG.
But I"m not sure if I had a "stuck" sparge or not. After a minute or so the flow from my spigot was a trickle and there was still some puddled liquid sitting on top of the grain bed from when I recirculated the wort. So I closed the valve stirred up the mash again and recirculated with very little wort and let it drain again. But it was very slow again and trickled to nothing. I also got a lot less wort out than I was expecting.
My questions are:
1) How long does it take to batch sparge?
2) Is the flow typically fairly slow?
3) What % of wort (mash and sparge water) should I expect to get?
Partial Mash of 5.5lbs mix of 2-row, chocalate, roasted barley and flaked oats.
1.5 gal 154deg 60 min mash
1.5 gal 165deg 10 batch sparge