Since there seems to be nothing supporting "esterified vegetable fat", despite all the components existing in isolation.

The sequence of my research:

Biodiesel is the ESTERIZED PLANT OIL or animal oil. It was first developed in. Germany in. 1988. Its raw material can be oil crops such as soybean, corn ...
ieeexplore.ieee.org/iel5/4125524/4125525/04125663.pdf?isnumber=4125525&prod=CNF&arnumber=4125663...

Can food labelled as containing 'vegetable shortening' or 'vegetable fat’ contain trans-fats? "Fats that have been partially hardened by hydrogenation ...
www.bbc.co.uk/food/food_matters/transfats.shtml

Vegetable Shortening Term - A cooking fat, which is basically flavorless, that is produced from vegetable oils.
www.recipetips.com/glossary-term/t--34959/vegetable-shorten...

A goodly number of ghits for "ESTERIZED FATTY ACIDS".
"ESTERIZED VEGETABLE OIL" almost systematically refers to BIODIESEL. Doesn't sound appetizing, but maybe there's nothing wrong with drinking it. Put a tiger in your tank.

PRINTING COMPOSITIONS UTILIZING ESTERIFIED VEGETABLE OIL FATTY ACID AS SOLVENT

(54) COMPOSITIONS D'IMPRIMERIE UTILISANT UN ACIDE GRAS D'HUILE VEGETALE ESTERIFIEE COMME SOLVANT
http://www.ipexl.com/patents/CIPO_2043914.html (but this is Canadian ...)

"Esterified" exists :
ESTERIFICATION is the general name for a chemical reaction in which two reactants (typically an alcohol and an acid) form an ester as the reaction product. ...
en.wikipedia.org/wiki/Esterification

DRUG CLASS AND MECHANISM: ESTERIFIED ESTROGENS are a mixture of several estrogens, .... Topics Related to esterified estrogens, Estratab; Menest ...
www.medicinenet.com/esterified_estrogens/article.htm

ESTERIFIED FATTY ACIDS promote joint health, improving flexibility and mobility. ... esterified fatty acids are derived from a 100 percent vegetable source ...
www.monaviesanjose.com/product_faq.htm

Long-chain fatty acids with a high melting point (stearic acid) and calcium salts of LONG-CHAIN FATTY ACIDS (VEGETABLE FAT and tallow) decreased acetate: propionate by about 20%.

MonaVie Active’s ESTERIFIED FATTY ACIDS are derived from a 100 percent vegetable source (palm nut oil). The (US) FDA has made it mandatory to list all ...
www.mvbwell.com/monavie_faq.html

NON-ESTERIFIED FATTY ACID (plural non-esterified fatty acids) (abbreviated as NEFA)
1. (chemistry) Any fatty acid which occurs free, rather than esterified with glycerol to form a glyceride or other lipid; usually as the result of hydrolysis
http://en.wiktionary.org/wiki/non-esterified_fatty_acid

1. Effects of an i. v. injection of ethyl palmitate emulsion on ...
EP (ethyl palmitate); EFA (esterified fatty acids); DNA ... genate sample the ESTERIFIED FATTY ACIDS (EFA) were examined according to STERN ...
www.springerlink.com/index/L365676721627H73.pdf

Herein, plasma fatty acid metabolic profiling including non-esterified fatty acid (NEFA) and ESTERIFIED FATTY ACID (EFA) was investigated using gas ...
www.febsletters.org/article/S0014-5793(06)01372-X/abstract

FATTY ACIDS are aliphatic monocarboxylic acids, derived from, or contained IN ESTERIFIED FORM IN AN ANIMAL OR VEGETABLE FAT, oil or wax.
http://en.wikipedia.org/wiki/Fatty_acid


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Note added at 27 mins (2009-03-16 07:43:01 GMT)
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Or "from vegetable source" as in one of the examples above.