A Logically Scientific Approach to Wine Tasting Order...

Keep priorities in a logical and practical tasting analysis guideline scenario combined with scientific absolutes. The tasting order is not necessarily subjective and, to a large extent of random conscious perception, over influenced by the current environmental psyche state of mind, not to mention the inevitable palate fatigue resulting from tasting numerous wines while also relying  upon an individual’s level of innate skill of taste perception.. Certain scientific tasting laws must govern and there must be a certain structure. Because of the way chemicals affect human senses, this also includes some guidelines to follow in the serving order of different wine types. These guidelines have rank and importance. In order, the first listed usually supersedes the subsequent:

Dry before Sweet ~ Sweet has a long finish. Dry wines consumed following sweet will taste bland and sour.

Light before Full ~ Again, full-bodied, full-flavored wines will tend to cancel out the flavors of more delicate wines. A light, dry rosé will show better ahead of a big Montrachet than behind it. Pinot Noir is more enjoyable before Cabernet Sauvignon than the reverse.

White before Red ~ Probably the most common mistake made in serving order is to give this rule the highest priority; don't do it. Keep those off-dry and sweeter whites for later, after the dry reds, or be certain to insert a spacer of sorbet or similar suitable palate wash in between flights. Serving a light Pinot Noir or Beaujolais before a big, full Chardonnay may even be preferred, on occasion.

Old before Young ~ This rule goes against the common wine dogma that is based on saving the best, the most complex, until last. Every wine drinking experience I have had where the older wines were served last says this is bad advice. Young wines are simpler, yes, but also generally more fruity, more intense, crisper and more tannic than older wines -- they overpower them. Give maturity the first chance, to be appreciated for complexity, grace, elegance, softness and length. Then let the youngsters show off their hard bodies and vigor.