Cadbury has been defended by Birmingham MPs after critics called for a boycott of its products.
Clare Short (Lab Ladywood) and Lynne Jones (Lab Selly Oak) said nothing would stop them enjoying Cadbury confectionery.
It followed calls from Shropshire MP Daniel Kawczynski (Con Shrewsbury & Atcham) for shoppers to boycott the brand.
He said he was angry that Cadbury had started importing sugar from France. British sugar beet farmers, such as those in
his constituency, would lose business as a result, he said.
Mr Kawczynski announced in a House of Commons motion - which has now been signed by seven MPs - that he was boycotting Cadbury until it changed its policy.
But the controversy has escalated into a full-scale Parliamentary row after Ms Short and Ms Jones hit back. They have sponsored their own Commons motion, saying they are "surprised" at Mr Kawczynski's behaviour.
So far, five MPs have signed up to their motion.
Ms Jones said: "Of course it [Cadbury] needs to search for the best prices from its suppliers, like anyone else in a competitive market.
"But in fact, Cadbury still buys 90 per cent of its sugar from Britain."