Of course he practiced. He probably gave a stern speech to his meat before embarking on this mission, too. Tony teased the foil up with one finger to inspect the damage before flipping it out of his way, distracting Steve with an armful of flowers so Tony could pick a morsel from the pan and risk a taste.
"I'm telling everyone," he assured Steve. There wouldn't be any getting away from his new talent then; there was no doubt in Tony's mind that it was the culinary demands in the mansion that ended Jarvis' career, and if Steve could pull off a rack of lamb without an off-putting burnt aftertaste, he had a solid 160 hour workweek in his future. "Pack this up, though," Tony continued, even has he released Steve to commit two hands to picking through the meat, "I have the car downstairs, I was thinking Antigua, but we could do something a little less high profile. Have you ever been to Minorca?"