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| | Agar |
 | | Agar gels of even a 1%-2% are strong, resilent, somewhat elastic, relatively transparent, thermally reversible, and exhiit syneresis (contraction over time, with the expulsion of water or other liquids; jello does the same). |
 | | The soluablilty of agar depends on heat; hence it is insoluable in cold water but upon heating (boiling water) it rapidly dissolves and then forms a gel as the water is cooled. |
 | | Agar, however, will not set in the presence of acetic acid found in wine and distilled vinegars, not will it set properly if there is a high proportion of oxalic acid as found in spinach, chocolate and rhubarb. |
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