American lamb offers greater yield. You get more usable meat per pound, so you're not just paying for bones. Flavor, freshness and quality judged superior. Better taste is the main reason American lamb wins over foreign. Freshness, quality and a preference for American products are the next leading factors.
American lamb is mild and delicate, compared to the stronger taste of foreign lamb.
This may be the result of superior breeding, improved flock management and mixed grain and grass feeding, all practices used by American lamb producers. Foreign lamb generally grazes on grass, accounting for its sharper, less popular taste.