This hip trick comes to us from Mary Elizabeth Rienzo Noll from Bayside Queens via her fab daughter Bernadette, co-founder of Future Craft Collective.
Whenever you find yourself at the bottom of a jam jar, use this depression-era trick for a treat. Pour the milk of your choice over the last scrapings of jam, add an ice cube and put the cap on it. Shake it like crazy, or better yet, have your kids shake it. Pop it open and enjoy your yummy shake treat! (You probably recall a past Hip Trick, showing how jam jar ends can also become to-go, fruit-on-the-bottom yogurts.)