"Wearing a 3-piece suit that talks to the Italian side of my family is one thing, but as a proud Scotsman it felt pretty special to be putting my kilt back on after nearly two years of not being able to travel back," he wrote alongside a labelled photo explaining each element to his ensemble.
The father-of-four revealed his son Alfie wears his own mini kilt for every birthday and Christmas celebration, and said his family tries "to keep tradition alive".
"We eat PLENTY of square sausage, tattie scones, parmesan cheese, and pasta. It's taking some more convincing to get haggis onto the family menu," he said.
Jock explained what each accessory from his kilt means, starting with the fly plaid - the long piece of fabric pinned over his shoulder.
"Back in the day it was much larger and in the Highlands they used to sleep out in the elements and it would be your blanket and protection from the weather," he said.
"There's no pockets in kilts so this is the pouch which hangs around the waist. I have a few hip flasks that fit perfectly. What are the chances?!"
Jock said the Ghille Brogues, shoes without any tongues, have holes across the top of footwear.
“This was from the olden days as it allowed your shoes to drain as you walked through water and bogs. There are long laces that wrap around the ankle and up the calves, this was to help keep your shoes on if you got bogged," he said.
The TV personality, celebrity chef, and a philanthropist revealed the Sgian-Dubh is the knife that is mainly worn on the right sock.