This is what i have has been working well
Name: Blackprinz
Type: Grain
Origin: US
Supplier: Briess
Yield: 75.00 %
Potential: 1.034
Color: 500.0 SRM
Max in Batch: 1-2% Minor color adjustment with little to no flavor impact in lighter
colored lagers and ales.
2-5% Adds color with subtle, smooth flavor
5-10% Use in larger quantities for color plus mild roasted malty flavor
Moisture: 3.00 %
Protein: 11.7 %
Coarse Fine Difference: 1.50 %
Diastatic Power: 0.0 %