Vegetable Broth (Best Option)
1 cup vegetable broth per 1 cup beef brothVegetable broth contains a balanced mix of savory flavors derived from simmered vegetables and herbs, which mimic the umami and saltiness of beef broth. This helps preserve the flavor complexity and moisture level in the bagel dough, critical for proper gluten development and crust formation.
When using vegetable broth, ensure it is low sodium to avoid excessive saltiness that could affect yeast activity. Also, avoid overly sweet or strongly flavored vegetable broths to keep the traditional bagel taste.
Compared to beef broth, vegetable broth produces a slightly lighter flavor but maintains the chewy texture and crust quality expected in bagels, making it the closest plant-based alternative.