While opening a new jar of no name™ peanut butter <UPC:060383092986>, I felt acute pain. It turns out that the inner seal has a razor-sharp edge which cut my finger. I kept bleeding for a few minutes, as shown in the photo below.
The label says "YOUR COMPLETE SATISFACTION WITH ALL OUR PRODUCTS IS GUARANTEED. IF YOU HAVE ANY QUESTIONS OR CONCERNS, PLEASE CONTACT US", so I promptly reported the problem to Loblaws, Inc.
