"We decided on the conversation from a Friesian dairy farm to the buffalo at the beginning of 2009 and had the first 31 buffalo on the farm within months. I went to Cremona in North Italy for the stock early in 2009 and they were on the farm within three months. I sold my milk quota at the time to finance the conversation and bought the buffalo for €2,000 each and €1,000 each for the calves
"We had to get an import license from the Department of Agriculture who were sceptical at the time and had to deal with restrictions in Britain because of a blue tongue outbreak there at the time.
"But I have to say that the Department and the food authorities have been very helpful to us," says Johnny.
The herd conversion began more or less immediately and was completed within a couple of years through a buffalo breeding programme on the farm.
In parallel, the investment programme to build a cheese plant on the farm - which cost the guts of €500,000 - commenced, as did the development of the actual cheese brand for which he gives much of the credit to cheesemaker John Ferry.
Today 10 people - John Ferry and two other cheese makers together with commercial and office staff - work on the product in Macroom and not a pint of cow's milk is produced on the farm.
It has been a remarkable journey for Johnny, all the more so given that three years into the venture he was struck by bowel cancer which has thankfully cleared after treatment in Cork University Hospital (CUH).
"I can't say enough good things about CUH," says Johnny. "They were brilliant." Next on the agenda are expansion plans and these will involve leasing another 150 acres so that the cheese company can have the space to up herd numbers and provide an area for the buffalo who are being dried off. Johnny, who is in his late forties, is married to Geraldine who runs a play school on the family farm.
The couple have three sons - Kieran (16) and Jack (20) who are both pursuing their academic studies and Peter (24), a marine engineer who has just returned from an Antarctic expedition.
For the West Cork Gaelgeoir, who was a monoglot speaker of Gaelann Mhúscraí up to four years of age, the buffalo have been career and farm savers. The animals may produce less milk that the Friesians, but they have turned his Macroom farm into a profitable enterprise which does not depend on the endless vagaries of the co-op milk price.
'They are like a wife - they are with you for life, but I love them'
Buffalo are very stubborn animals who take a great deal of coaxing and cajoling when they are in a bad mood, explains Johnny Lynch.
"If they don't want to do something they will dig their feet in and that's the way it will be. If they don't want to be milked they will do everything to stop you milking them."
This degree of stubborness is not an everyday occurrence with the herd but it shows the difference between the Buffalo and Friesians which Johnny previously milked.
"But I love them, they are like a wife - they are with you for life, and it doesn't take a big fence to keep them in. An ordinary line of electric wire will do that," says Johnny.
Their feeding regime is also different from the Friesians in that they prefer haylage to silage.
"They don't like silage or any wet feed. Nothing stringy. They prefer the drier stuff so we give them the haylage. It works out the same cost wise."
The buffalo milk production levels are two thirds less than that from a dairy herd.
"You'd get 10 litres a day from a buffalo and they would milk for between 230 and 250 days a year which would be about a third of the milk you would get from a Friesian. But the fats (7.8pc) and proteins (4.6pc) would be better," says Johnny.
However, it is the add-on value of the buffalo milk which makes the Macroom artisan cheese enterprise profitable - and a lot more profitable than simply milking a Friesian herd for the co-op. The milking regime at Macroom would also differ from the normal dairy routine in that the milking is linked to the cheese production which in turn is linked to the market demands for Macroom Buffalo cheese.
"There's no alarm clock here on the farm. We could be milking at 3am if we had a cheese order to get out the door but normally we start milking at 7am," says Johnny.
He has no regrets about going down the buffalo route and points out that the enterprise has given a great buzz to the area.
"When I was milking the Friesians loneliness was a way of life. You'd be lucky to see one person around the area on any day. Now the place is buzzing," he adds.