"The team is in good shape and is absorbing the winning mentality that our Coach reminds us of every day," he told the Gazzetta dello Sport.
"[Ciro] Ferrara was very clear from the first day of pre-season training, he said we have to win even against the youth side. It doesn't matter who you are facing. You are Juventus and you must win."
Inter have dominated the Scudetto race since Calciopoli, but losing Zlatan Ibrahimovic could be a big blow.
"They still look strong and you can already tell they are more of a team, but we have closed the gap," continued Amauri.
"Alright, it was a friendly, but we drew and then won on penalties. We could have had another goal when [Vincenzo] Iaquinta's spot-kick was saved. This is our spirit, to bring home the result, whether it's against Inter or a Serie C side.