Vegetable Broth (Best Option)
1:1 (1 cup vegetable broth per 1 cup chicken broth)Vegetable broth works well because it contains a mix of aromatic vegetables and herbs that mimic the savory and umami qualities of chicken broth. The natural glutamates in vegetables like mushrooms, celery, and carrots enhance flavor similarly to chicken broth.
To maximize flavor, use a high-quality or homemade vegetable broth that is well-seasoned but not overly salty. Avoid broths with strong or unusual flavors that might compete with the pasta sauce.
Compared to chicken broth, vegetable broth offers a slightly lighter but still rich flavor profile, making it an excellent substitute especially for vegetarian or vegan pasta dishes.