Hello from Ontario...what you want is fresh whipping cream. Sealtest brand is in the yellow carton. It is 35% fat. Copy link below to see a picture of the carton.

https://www.google.ca/search?q=seal...vnjMBLURhQtM%3A

It is expensive, but 1 only use 1 tsp in my tea.

As for restaurants, I find sometimes I have to use appetizers to make up a meal, like a Caesar salad and grilled shrimp screws or wings. But you are almost always safe ordering a burger and not eating the bun with a side salad