Just thought about this... All the linndemans framboise all have a cap and a cork, why both? What is the purpose
Funny story. I was doing a beer tasting at an offsite event. One of the beers this group chose for me to show was the lindemans framboise. I had forgotten about the cork and didnt bring a corkscrew. Luckily one of the dudes in the group had one on his keychain.
Its capped because it's carbonated, which has the potential to build pressure and pop. I believe the cork is traditional. Same idea as a champagne cork and cage.
I remember the first time I opened one I was looking for that satisfying hiss and release of pressure and got nothing. When I saw the cork in there too I'm pretty sure I said "really?" outloud. But the beer was fantastic; I like all of the Lindemans! And yes, I'm aware that I did not answer your question in the slightest.
Cantillon is pretty notorious for this. They can be a bitch to get out sometimes, but a little bit of cork adds to the funky nature anyways.
Pretty sure he was just referring to the cork and cap method in general, not Cantillon specifically. Cantillon's corks are ridiculously bad though. Half the time some beer seeps through and gets trapped between the cork and cap.
Fantome does this, too. They need to hold in the impending gushing madness somehow. I'm surprised it doesn't have a cork, a cap, a cage and a wax seal.
On another note I just noticed that Duvel in my area has switched from a champagne cork to a metal cap.