"I hate to say it but I think we've got Americanised. The younger generation don't think they should be doing hard work, they think they should be sat behind a desk working on a computer."
Nevertheless, he is hopeful of finding someone to take on the apprenticeship and potentially take over the business when he retires.
Simms said: "People think it is a much easier skill to learn than it actually is. There is incredible precision involved.
"The skill of making the barrel is something that has to be cultivated and refined."
When he began his career at the Theakston Brewery in Masham, there were around 100 coopers in Britain. The introduction of metal casks in the 1960s has resulted in the trade almost being lost.
"I want to keep the industry alive in England," said Simms, who set up his own business, White Rose Cooperage, in 2013.
How to make a cask
1. Saw timber to length and use a cooper's side axe to shape the staves.
2. Round the insides with a hollowing knife and the outsides with a backing knife.
3. Pass over a six-foot plane and joint the staves, then raise the cask on a hoop before driving a truss hoop over the top to hold it together.
4. Bend into shape over an open fire to heat timber and make it pliable.
5. Add steel hoops and rivet them, then place over fire again to set.
6. Cut a groove where the heads (lids) will sit, measure heads with a compass, fit to size and slot into the groove.
7. Seal with a piece of rush.
8. Cut a bung hole into the side.
9. Add branding.