Haven't the foggiest why I came back to this thread after so much time, but if you're around, to answer your question-

Zweigle's is the brand name (available in supermarkets there).

Just about every hot dog joint in the Rochester NY metro area features them, but the one I favor is a chain, "Bill Gray's" which features quarter-pound versions (along with an extensive menu of comfort food that's a cardiologist's delight).

As far as taste goes, if you're old enough, you'll remember Nedick's in NYC (not to be confused with the outfit calling itself "Nedicks" in Penn Station), and Zweigle's white hots are a close match. Nedick's used to serve them on a buttered, toasted "English " (top sliced) bun).

Tom Wahl's (same corporate umbrella as Bill Gray's but less extensive menu) also features Zweigle's (but their's are standard-sized dogs).

BTW, not every store carries them, but Boar's Head introduced (relatively recently) a Pork and Beef frank. Like their other products, it appears to be high-quality (for that kind of food).