The incident occurred at the Skipton Road store between 5.15pm and 5.20pm on Wednesday 14 February 2018.
Detailed police enquiries, including forensic examinations at the scene, have been carried out to help identify the suspect.
It is not known if the man took the items to impress a love-interest on Valentine’s Day, but officers are appealing for people to come forward if they recognise the man in the image and possibly recall enjoying a steak dinner and Thorntons chocolates with him on 14 February.
The bespectacled man is described as white, about 5ft 8in tall, slim build with brown or possibly chestnut-coloured hair. He was wearing light-blue jeans, a green and white horizontal striped shirt and a light blue jacket.
If you recognise the man or have any information relating to the theft, please contact North Yorkshire Police on 101, select option 2, and ask for Matthew Reeve. You can also email firstname.lastname@example.org
Please quote the North Yorkshire Police reference number 12180032697 when providing details about this incident.