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gelatin filtration

I followed the recipe for gelatine filtration given in Texture (a lot of excellent stuff in there) – you can also read about it in The Curious Cook. The source material was carrots: I run some particularly unexciting and fibrous carrots through my crappy HEMA blender until I was bored – which in normal time would be two to five minutes. The resulting orange slurry was additioned with gelatine dissolved in hot water to achieve a 0.5% solution.

If you did a 0.5% agar-agar solution, once solidified you could probably walk on it. With gelatine you get a very weak gel. Don’t despair, give it the time to set properly. A few hourse in the fridge did the trick for me.

Then I took the weak, disappointing gelatine and popped it in the freezer. Then I forgot about it for a few days. When I remembered about it, it had frozen to a solid block – excellent. I then placed it in a paper coffe filter adapted to a colander and placed it all inside a recycled yogurth container. Then I forgot about it for a couple of days. As you can tell, this procedure is a sort of low intensity really slow food activity. 

What I found in the container yesterday was expected but nonetheless really odd. An almost perfectly transparent essence of carrots. It tastes like carrots, but it looks exactly like water. No viscosity, no color, no suspended anything. I could place a picture of it here, but it is faster to ask you to imagine a glass of mineral water – there, you got it.

Instead, here is a picture of what was left in the filter

 

Pretty unappetizing, but if you look at it in detail, you can see that the spongy frozen gelatin structure is quite visible

 

 

 

 

The amount of transferred carrot taste was quite shocking. See, when you drink carrot-flavored things or eat carrot-flavored dishes like carrot cake the carrot taste is reduced to a certain, simplified carroty sweetness. In the essence you will find the complete carrot taste experience, from the first note to the carrot aftertaste. From a sensorial point of view, this is really disturbing, because it is the carrot without the carrot… 

Next time I will try the filtration with something more exciting than carrots: I have read that anything water soluble works really well, and also some fat-soluble things. 

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1 comment

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