According to Art. 9 of the Law "On the Protection of Consumer Rights", the consumer has the right to exchange goods of appropriate quality within fourteen days, not counting the day of purchase, unless a longer period is announced by the seller
However, according to Appendix No. 3 to the Resolution of the Cabinet of Ministers of Ukraine dated March 19, 1994 N172 "List of goods of appropriate quality that are not subject to exchange (return)", food products are not subject to return or exchange.
The buyer can only return goods of inadequate quality.