Do any restaurants in manhattan, preferably mid town do sweetbreads that you can order for take-out?
jeez...they tend to be served in more upscale restaurants that dont tend to do takeaway.
i know blue ribbon bakery has an entree of sweetbreads...im pretty sure theyd do take away for you.
Kefi (on the UWS) does fantastic sweetbreads (crispy on the outside, tender and soft on the inside). They're honestly better at the restaurant before the crust has time to soften, but I've had them delivered before, as well. The flavor's still great. It's an appetizer portion, $7.95.