The phrase "a jar containing" is correct and usable in written English.
You can use it to describe the contents of a jar, indicating what is inside it.
Example: "I found a jar containing various types of candies in the pantry."
Alternatives: "a jar filled with" or "a jar holding".
Only yesterday, Dennis, holding a jar containing a spider, told the neighbor girl: "Stop screamin', Margaret!
Think of a jar containing a million marbles, half of them red and half blue.
Young Ana, pre-growth-spurt, carries a jar containing a butterfly's cocoon.
Outside the tomb were two skulls of horselike animals and a jar containing the remains of another baby.
Inside a closet at Mr. Brooks's home, the police said, they found a measuring cup and a jar containing gasoline.
One recent afternoon, a neighbor arrived with a jar containing a tiny dormouse, one of dozens overrunning her house.
Example 2: A jar contains 4 blue marbles, 5 red marbles and 11 white marbles.
Garden Tiger A century ago, a jam jar containing a Garden Tiger moth was the favoured pet of many small boys.
Mr. Donohue also recorded a video on Thursday in which he held up a clear jar containing a bobblehead doll of President Obama and a brown substance that Mr. Donohue said was feces.
They were then anaesthetised, one at a time, by placing them for 2-3 minutes in a desiccated jar containing a chloroform soaked gauzed pad, before being decapitated using a small guillotine (Scientific Research Instrument, UK).
The full horror is made explicit in the painful opening chapter when Rebus, seven days off the fags and screaming inside for one last, lingering smooch with his smoky siren, receives instead a specimen jar containing a diseased lung from his pathologist girlfriend Deborah Quant.
