The Bookworm Library has off the menu for vegan options. There was no menu when Vegan Lanka visited them. Most items are safe for vegans, but some items can contain milk. Ask the staff for info.
Address: Asian Highway 4, Hikkaduwa, Sri Lanka
Conclusion: Worthwhile visiting.
Tel: +94 77 622 5039
I also visited the London House Of Coffee in Colombo. If you want to know my experience, click here.