Making elemental diets from scratch?

Hi,
I don't have much disposable income so I want to try and make my own elemental diet from scratch instead of buying the very expensive ready made up versions. I've found a few recipes online but I still have a few questions. One version advises for example 2 tbsp of amino acids per dose/meal but it does not state quantities of branch chain amino acids or essential amino acids etc? Could anyone post any recipes for home made elemental diet formulas that are quite in depth so I can definitely be confident I'm not missing any potentially important ingredients? I react to all simple sugars so deemed buying pre made formulas like absorb plus just too risky incase I end up reacting to them and then have to put it all in the "supplement graveyard!"
Or alternatively if anyone knows of any other brands of ED's that aren't high in simple sugars that they could post the names of? Also I live in the UK so any good UK based suppliers of ED's would be handy (if any exists!) as the cost of shipping large containers is obviously very pricey.

Cheers.