A chef preparing a dinner party flew into a rage and stabbed his girlfriend to death after she told him she had already eaten.
Peter Cumming, 58, killed Glasgow University employee Lynda Brown in the home they shared in Glasgow's southside.
Cumming stabbed mother-of-two Ms Brown four times in the back in the home they shared at 16 Mannering Road, Glasgow, on September 1, last year.
On Wednesday he admitted her murder and faces a life sentence. The number of years Cumming must spend behind bars before being eligible for parole will be determined by judge Lord Bannatyne next month.
The High Court in Glasgow heard that Ms Brown and Cumming, partners for eight years, had planned a dinner party and invited two friends Trevor and Rosemary Clarke.
When Cumming returned after buying ingredients for the meal he claimed that Ms Brown told him that she had already eaten and this made him "really angry."
Cumming said that he and Ms Brown had had words and added "something snapped."
He added: "I was in behind her in the bedroom and I had the knife and I don't know where it came from I don't know. I was out of control. It's just not like me I am so in control. I need to keep things in control."
Cumming alleged that Ms Brown reacted to his anger by goading him; he had then picked up a large kitchen knife and plunged it into her.
He said he stabbed her once while she was standing and then once again as she lay on the ground. Cumming told police that 5ft 3in tall Ms Brown, who weighed eight and a half stones, had not attacked him.
Advocate depute Andrew Miller, prosecuting said that a post-mortem examination revealed that she had been stabbed four times in the back.The fatal wound went through Ms Brown's neck severing an artery and causing massive blood loss.
Ms Brown managed to dial 999 around 6pm before the fatal attack and told the operator: "My partner's threatening me with a knife."
When police officers arrived at the flat eight minutes later they found Ms Brown lying dead on the bedroom floor with a knife embedded in her back. Minutes later Mr and Mrs Clarke arrived for the dinner party and discovered their hostess was dead and their host in handcuffs.
The court was told that there were tensions in the relationship between Mr Cumming and Ms Brown due to his drinking.He had convictions for domestic abuse towards Ms Brown, who worked at Glasgow University's biochemistry department.
Lord Bannatyne will sentence Cumming next month. Defence QC Gordon Jackson said: "It has always been his position that he was willing to plead guilty to murder."