I came across tagatose last year when I was looking for a low carb sweetener that didn't have the cooling effect that the sweeteners I usually do. I have been very impressed with its taste, though it's not perfect when it comes to baking due to its maliard reaction - which means, it may brown too quickly in some recipes when baked. So be careful when baking. I've had terrible results with pavlova as well as some biscuits that used a high temperature but the baked cheesecake and muffins I made with tagatose worked really well.
Taste wise tagatose is really good, it tastes just like sugar but a little bit less sweet which is good for me as I find sugar too sweet these days. I have made brittle and caramel syrup with great success, tagatose works really well for this.
There is one more downside and that is it's popularity, Iherb are one of the few people that stock it and for a good price - but it goes out of stock quickly, so you may find you have to click on Notify Me so that Iherb notifies you when it comes in and then order some as soon as you see the email before it goes out of stock again. Tagatose, 1 lb. (454 g)
UPDATE: Unfortunately, the manufacturer that Nunaturals were using are no longer producing Tagatose *sigh* so in the mean time we're really just left with erythritol or Now Foods, Erythritol, Natural Sweetener 2.5 lbs (1134 g) and stevia until someone pulls their finger out and starts producing it again. Please email me if you find it available somewhere!
The good news is that if you haven't used iherb before, then you can use my code RER863 and you will receive $5-$10 off your first order and they also have very cheap shipping to Australia.
Below I will add some photos and links for some recipes that I have used with it lately as well as our discussion thread on tagatose that you may find useful. Click on the photo to go to the recipe, Enjoy!
Low Carb Rhubarb Muffin with Cheesecake Cream
Low Carb Pumpkin Cheesecake with Pecan Crust
Low Carb Christmas Pudding Semifreddo
Low Carb Caramel Syrup
We also have a discussion thread that you can find here: Anyone heard of the sweetener Tagatose?
If you try it please let me know how you go!