Don’t give up hope. If you’re in a pinch, you can trick half-and-half into acting like the real deal. The secret weapon is gelatin or unflavored agar-agar for a vegan twist.
Bloom a tiny bit of gelatin in cold water, melt it gently, then whip it into your cold half-and-half. It adds the stabilizing structure that fat usually provides. I’ve done this for a pudding topping, and it actually held its shape for hours.
Another trick? Use a stabilizer like instant pudding mix (just a tablespoon). It’s a dirty secret, but it works. Your whipped cream will be a little shinier and less fluffy, but nobody will know unless you tell them.
Can You Make Whipped Cream with Half and Half? - Go Cook Yummy
The cold truth
Temperature is everything. Your half-and-half must be ice cold—like, straight-from-the-back-of-the-fridge cold. Warm half-and-half won’t even think about whipping; it’ll just laugh in your face.
Chill your bowl and beaters too. I keep a metal bowl in the freezer just for these emergencies. It’s the difference between getting a foam and getting a sad, liquid puddle.
Also, don’t expect stiff peaks. Aim for soft peaks that slump a little. That’s the best you’ll get, and it’s honestly fine for folding into a pancake batter or topping a bowl of cereal.