Hans' Homemade Ice Cream doesn't offer single scoops; the smallest size is two scoops costing just under $7.
Their Costa Mesa location offers single "kids" scoops.
They don't give samples, so be sure of your choice before ordering.
A few nearby places worth checking next.
I have been using it now for 3 months and it saves me so much research. Reduces the need to call and double check every time.
How did I not know these places existed?! Atly's scoring is a lifesaver, now I can finally find THE spot without wasting time Googling my life away.