I've been trying a few fruit of one of my latest selections from the California budwood program. I topworked a 10 gallon tree I've tried several varieties on. This is the best tasting of the so called "sweet" lemons I've tried. I used to have a mature ujukitsu tree and have a large branch of samboken "lemon."

The NZ lemonade tree actually tastes like lemonade. It tastes like a sweet grocery store lemon, not many seeds either. It is not just a little lemony like the ujukitsu or samboken which I consider to be good but not excellent. I'm considering planting a tree in the ground.

The one I tasted was inside light orange, not pink and tasted also like a very good orange, while the shape and appearance was all lemon like outside ...

That good to know, as my New Zealand Lemonade tree is just now starting to bloom for its first time. I look forward to tasting the fruit. If it is good tasting enough I might remove it from its container and grow it in the ground.- Millet

Most of the fruit has the typical lemon shape but this one was most yellow:

uhm ... are you sure ?
that looks like a meyer to me ...

I have one going that I budded this past summer. We'll have to see how it develops.

http://www.citrusvariety.ucr.edu/citrus/lemonade.html

I have two NZ Lemonade producing ripe fruit at the moment. One unfortunately was sold to me as something else, (damn mislabeled trees).
The fruit are the same size and shape as my Valencia Oranges with a soft yellow colour and very pale flesh. Started picking midwinter and still picking early summer.
Wife and I just ate one. She put her finger on the taste....sweet and sour.
Full of juice. I have mainly used the fruit as a meyer replacement in cooking however it is refreshing to just eat them out of hand occasionally.
While not as popular in NZ as the Meyer Lemon it does have the same role as a backyard tree.I have never seen the fruit for sale at any markets or shops.

http://3.bp.blogspot.com/-bdSFfl8aUNM/Thy8J_oJa0I/AAAAAAAAAjY/7xnwmlSdMAM/s1600/lemonade1.JPG

Such looks the Lemonade I know ...