It's that time of year again when you might just unearth a special treasure.

Truffle season has begun and there's plenty of places across the region to hunt for these delicious delicacies.

Robertson Truffles has already opened for tours, which will continue through August.

Owner Patrick Moroney said they had plenty of interest for their first two tours.

"With people being cooped up for so long, most people seem to enjoy being outside," he said.

And it's already been a good year for the Southern Highlands operation.

Mr Moroney said over the past two tours two truffles over 200 grams had been found.

"It's like an iceberg. You start at the tip and dig down and you don't know what's there."

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But whether this year's yield will be as good as previous years is yet to be determined.

In a "very good year" Mr Moroney said the yield could be between 40 and 50 kilograms.

However with the drought, they have yet to see whether it will impact the volume of truffles harvested this year.

And of course, truffle hunting would be extremely difficult without the help of a truffle dog or pig.

While it does sound like a pretty cute idea to go truffle hunting with pigs, Mr Moroney said they were not used much in Australia because of one main disadvantage- they want to eat the truffles they find.

Robertson Truffles uses professionally trained detection dogs and introduces them to the scent of truffles to help unearth them.

Mr Moroney said they had Springer Spaniels and Labradors at their farm.

Robertson Truffles mainly produces Black Perigord Truffles but have also experimented with summer truffles, which Mr Moroney said were planted at the same time but had yet to produce.

Wild Food Adventures has also teamed up with a truffle farm at Big Hill in another truffle hunt experience.

The first of these tours will start on Saturday, June 27, with visitors guided by Zazu, the truffle dog.

A three course lunch, with a truffle inspired menu will be enjoyed in the ruins of the old homestead on the property.

These truffle hunts will run through to August 8.

Wild Food Adventures founder Amanda Fry said she was excited for the season ahead.

"We are looking forward to a great season ahead, as early indications have shown that it's going to be a good yield after the rain earlier in the year," she said.

"Our first truffle hunt is this Saturday and we are excited to get out there, unearth some black perigords with Zazu and cook up a truffle inspired feast for lunch in the old homestead ruins. Winter in the Highlands is our favourite time thanks to these black nuggets."

But it is a different story this year for Terra Preta Truffles.

Located just outside Braidwood, this family run business will not have guests at the farm for truffle hunts.

But fear not, their produce will still be available online and at the Farmers Market in Canberra where they have a stall on Saturday mornings.

They will also continue to export much of their produce overseas to places including France, Japan and London.