The Spaniard, a £2 million acquisition from Rayo Vallecano, notched the opener and a spectacular second in a performance widely praised as one of the standouts of the Premier League weekend.
"I never dreamt of such a debut; I've always heard it's very difficult to win away in the Premier League and we got a 5-0 on the first day," Michu told AS.
"And I was lucky enough to score twice. It couldn't have gone better. I've never been acclaimed like last Saturday and it's a great feeling to leave the pitch that way."
The midfielder spoke of his happiness settling into life in Wales, adding: "My life hasn't changed so much. I'm still the same sleepyhead guy but what I miss most is Spanish food.
"I usually take the chance when my parents come to visit to me and they bring me some food, so I have the fridge full of typical Asturian products.
|20/1||Swansea are 20/1 to finish in the Premier League's top six with bet365|
"I will never forget my origins. I was lucky to score and that's why I celebrated that way. No one knew what I was doing, so I must bring some sidra [Asturian cider] now and show my team-mates what it is.
"I'm having a great experience; Swansea is a very calm town with a large beach. The weather is not the best, though!"
Focusing on matters on the pitch, Michu stated: "Our objective is to play well and avoid relegation. It can't be any other way with [Michael] Laudrup as a coach. That's what makes us different from any other Premier League team.
"Swansea made a bid for me and Laudrup was key to my signing," he explained of his decision to join the Swans. "I guess the Spanish economic crisis made it impossible for local teams to make offers for me, but I hope to return to Spain someday."