Oh! Yes, chocolate ice cream makes a lot of sense. (I agree that icecream milkshakes are the One True Milkshake). Though the freezer is only supplying vanilla ice cream at present, so I will add cocoa powder and whisk mightily.

These are the kind of useful measurements that involve taste as opposed to quantity. I will try once tonight's eggplant salad mishmash is done: it's been over 90 F all day.