Owner Greg Mathews said the fire burnt about 10 per cent of the grove.

"It definitely reduced our crop and burnt some fencing," he said.

"But the trees will all grow back. It will be about three years before they start producing again.

"We were lucky compared to others in the area. It could've been a lot worse.

"We are very thankful to all the fire-fighters who helped get it under control."

To thank the people who helped save the Laharum grove, Toscana Olives is giving away a free bottle of oil to those who were involved in the fire-fighting efforts.

"It is the least we can do," Mr Mathews said.

"We are really appreciative of everyone who helped.

"Now we want to share the harvest that they helped save."

He said anyone who was involved in fighting January's bushfires should call into the grove to pick up their free bottle.

The grove celebrated this season's harvest with an open day on Sunday.

"We had woodfire pizzas, wines and we enjoyed the fresh produce," Mr Mathews said.

"We had more than 30 people there and it was good to see people made the effort."

The grove hosted its first open day last year.

"We did it last year and now this year. We will probably do it every year now," Mr Mathews said.

Visitors to the grove could taste oil straight from the press.

"The flavour is like no other. It is fresh oil, which is so vibrant and fruity," Mr Mathews said.

"The flavours are amazing.

"It was good to be able to share that experience with people. We love this time of the year at the grove."

Staff at Toscana started harvesting last month.

"We will still be going until the end of June, maybe a bit longer," Mr Mathews said.

He said the dry summer had reduced the yields, but the quality was still fantastic.

"Despite that, generally the season is better this year than the previous two," he said.

"We had a wet spring which is when the trees flower and the fruit set was really good."

The harvest process at Toscana Olives involved workers pressing olives hours after they were hand-picked.

"We cold press them into organic, extra virgin olive oil," Mr Mathews said.

Oil was available for sale the same day it was harvested.