Beware! Esszencia is a legendary nectar, awfully costly ! For example for a Tokay Esszencia 1993 the lowest price: $47.99,-/100 ml.
Essencia is the richest and rarest of all Tokaji wines. It is the truest expression of terroir known to man. Typically, this free run juice takes 6 to 8 years to complete its fermentation to less than 3% alcohol. It can reach 85% residual sugar. A collector's item to drink in small portions, by itself, to celebrate life.
You should rather choose a quality Aszu vintage which will give you a lot of pleasure.
You may feel dizzy after tasting wines, especially if you come out from a cold cellar to the hot street.
Majority of Tokaj wine are sweet, very sweet, so it is hard to recognise that they are also strong at the same time.
So do not hurry with tasting, eat (e.g. cheese) between wines, drink just a little of each and take a walk before you go to the next cellar.