The son of Fiorente has continued to improve with each run and Alderson is now confident that Liqueuro can produce a maiden Group 1 for her stable.
“He has been a bit of a surprise packet,” Alderson said.
“The way he has been going at work, he hasn't shown us a lot but when he has got to the races he has been a big surprise.
“He doesn't show a lot and but he is very content so that’s a good thing.
“He has had a long campaign for a horse in his first preparation but hasn’t given us any indication he has gone backwards.”
Liqueuro demonstrated his staying power with wins in the St Leger Trial (2200m) at Bendigo in March as well as winning the Listed Galilee Final over 2400m in his last start.
The three year old also showed promise when winning a 2000m competition at VRC headquarters when showing real stamina to win late under the ride of soon to be champion jockey Jamie Kah.
A date was pencilled in for the VRC St Ledger last month however Alderson chose to head for a stiffer competition at Morphettville.
“It was pretty much a planned program for the St Leger and the races he competed in, we had planned to run him in and when he won he proved himself to be effective over a trip so thought we would give him chance,” Alderson said.
“I know he can run the trip and he’s been competitive against some of them before.
“The filly (Personal) is an interesting addition to the race and obviously Explosive Jack has great form too.”
Liqueuro sits on the second line of betting ($5) behind firm favourite Explosive Jack ($3.20) who is in the hunt for his third derby win of the season.