Tony smirked a little at Frigga's whispered comment about mulled wine. He didn't think he'd see a day where Thor's Mother of all people would be serving him hot broth and mulled wine. Then again he also never foresaw himself drifting through space, trapped. He saw something else that day...
When Kat confirmed that Frigga was indeed her Grandmother, that was when he it all clicked into place. And in that moment he was sure he knew who one of the parents was. "So... Loki's your Dad huh?" he asked. "The whole sorcery thing should really have been a give away. Points deducted from me for being slow on that part. I should be ashamed but..." he paused and shrugged, lifting the cup of 'water' and taking a drink. He placed the cup down to try the broth. It was savoury and hearty, homely and warm with an extra pinch of magic. And it went down easily. Hungrily, he ate, not really caring how he looked.