Members of the Unite trade union working at the caramel wafer and teacake factory formally rejected the firm's 2% pay offer on Monday, but said they would re-ballot members if a better offer is put on the table during talks via ACAS this Friday.
Further industrial action is set for next Tuesday and Wednesday and the following Monday and Tuesday.
Speaking to FoodManufacture.co.uk last week, Unite regional organiser Tony Devlin said staff were "deeply unhappy" with the way that they had been treated by bosses at the family-owned firm.
The company said it was "disappointed at the outcome of the ballot as we believe our offer of 2% represents a fair pay award, particularly in the current climate"
Md Boyd Tunnock added: “As a family, we have demonstrated our commitment to our workforce and our community by providing long-term, secure and stable employment - reflected by the fact that the average length of service is 16 years - and our aim is to continue to do so.
"Our staff’s level of pay is in line with, or above, our local competitors and they also enjoy a generous benefits package."