Sweet Potato Porter/stout

[jstanley2]

Hello all,
I just drank up my first batch of sweet potato beer. It was very good and I am needing some help converting the malt part to all grain.
Original Recipe

4 large sweet potatoes
1 vanilla bean
12 fluid ounces full flavored molasses

Boiled sweet potatoes until soft. Added 12 oz of mollassy (that's what the notes say)
Cut up 1 vanilla bean
placed all three in 350 degree oven for 35-40 minutes

Mean while

2 lbs Briess Caramel Malt (60L) - (uncrushed)
3.3 LB can Murtons Amber LME
3 Lb bag Plain Dark DME
1 oz Sterling Pellet Hops (6.0% A.A.)
1 oz Strisselspalt Pellet hops (2.6% A.A.)

Steeped 2 lbs Briess Caramel Malt @ 150 degrees for 1 hour
Remove grains, add LME and DME
Boil 45 minutes
pour in sweet potato mash
boil for 30 minutes
Sterling addition
boil 15 more minutes
add Strissel spalt hops
turn off heat immediately

O.G. was 1.060 at about 80 degrees F.
My question, how do I turn the extract into all grain?

Thanks,
Justin

 

[Oldsock]

Converting amber/dark extract is tricky because most manufacturers don't list what grains they use.

Here is what Briess uses as a jumping off point.

Sparkling Amber Ingredients: Base Malt, Caramel Malt 60L, Munich Malt.

Traditional Dark Ingredients: Base Malt, Caramel Malt 60L, Munich Malt, Black Malt.

So mostly American 2-row (how much depends on your efficiency), maybe a pound or two of Munich, and then .5 lbs of black malt. I wouldn't add any additional C60, did you steep it uncrushed?

 

[flatrockbrewing]

This sounds like a great recipe....I was thinking about making a syrup of strained sweet potato, dark brown sugar and marshmellow flavored cane sugar syrup then adding it to a keg of stout that's already been aged.

 

[HokieBrewer]

What yeast did you use? I made one last year and am down to the last 3 bottles. Still not a fan of it. I used S-04 but fermented it too warm and I don't think the esters mesh well with the sweet potato and the small amount of spices I added...

 

[douglasbarbin]

Did anybody ever come up with a recipe for this?