All Blacks 'nervous' about Dublin rematch
Foster, speaking to the media, said hat happened in Chicago a fortnight ago – when Ireland recorded their first-ever win over the All Blacks – has added "a little bit more seasoning" to the Dublin rematch.
The All Blacks had left their debrief on the 29-40 loss suffered in Chicago until this week, but they are well into the process of getting their game back on track.
"We know that if we don't front up and play to the best of our ability it's going to be a long game," Foster said in an interview on the All Black website.
"To be honest it's a good feeling, it's a nice edge and it forces us to dig a little bit deeper and make sure we prepare to the degree that we always take a lot of pride in doing and probably didn't do that good a job of in Chicago," he said.
Foster said lock Sam Whitelock came through Tuesday's training well and had stood up to the load that was put on him.
It was a case of seeing how he responded to that and that would determine the next step in his recovery process.
If he was ok he would go at full pressure at Thursday's training.
"These are great weeks; there's an edge in the air, we love preparing for big Test matches.
"Coming to Dublin and preparing to play Ireland here is always pretty special for us.
"It's a fantastic stadium, the supporters are amazing and I guess what happened in Chicago has added a little more seasoning to it," he said.