I don't have Beersmith but you should be able to punch in for a 25 L brew.
SuperTTL Best Bitter
Warning, readers of this recipe who are of Yorkshire Origin are warned that it contains items that may cause distress
5000 TF Golden Promise
500 Munich 1
60 Melanoidin
60 JW Choc Chit
90 min 67 degrees
2L of the 'complete' runnings boiled and caramelised to 300ml
25 NZ Fuggles flowers 90 min
25 EKG pellets 90 min
25 Styrian Goldings 20 min
500 inverted (some citric acid) caramelised sugaz
h34r: into the fermenter
Wyeast Ringwood 1187 at 18 degrees
Short cold crash, Polyclar but no other finings
English Mild Ale
4000 TF Golden Promise
150 JW Choc Chit
100 Carafa T2
70 degrees 60 minutes
15g Northdown 60 min
10g Styrian Goldings 10 min
200g of da sugaz caramelised in water to the same colour as Australian Golden Syrup
Ringwood Yeast step-recultured with a total of 200g LDME
18 degrees, no cold crash, bottle from primary after about ten days in ferm.
Acknowledgements to MildMaster Buttersd70 for general advice on mashing regime and spec grains, your little grasshopper apologises to master for da sugaz
edit: oops yes the Whirlfloc and I also totally forgot to do any water adjustments except for the 5.2 stabiliser which did the trick