I'm going to be brewing a Best Bitter (1.040) this weekend and want to slightly under pitch my London ESB yeast for a good amount of ester production. The last time I brewed an English Bitter I made a good starter, and as a result, the esters just weren't there. Mr Malty says to add 1.8 smack packs or 1 smack pack per liter starter for this gravity. If I pitch just one smack pack to the wort without starter is that sufficient for under pitching or would that not be enough? I don't want to cause any off flavors or under attenuation from under pitching. My other idea was to do one smack pack in 1/2 liter starter. Figured that would be under pitching as well, just not as extreme. Thoughts?