IT’S THE MOST ABUNDANT PROTEIN IN OUR BODIES, and is essential to keeping skin looking smooth and youthful. But while collagen is often associated with wrinkle injections or topical treatments, a recent trend toward ingestible collagen has enthusiasts sipping and chewing their way to glowing skin, shiny hair and strong nails. From collagen-rich bone broth and nutrition bars to protein powders that can be stirred into drinks, some claim that ingestible collagen offers long-term results in comparison with topical quick fixes. Ready to give it a try? Bavette La Boucherie (330 E Menomonee St.) offers beef bone broth year-round, and sometimes chicken bone broth, especially in the summer months.