The differences of Brandy, Eau de Vie and Liqueur
Brandy
Examples: Cognac, Armagnac, pisco, eau-de-vie etc
Brandy Making

Reading Brandy Labels
V.S. : "Very Special" or 3-star; aged at least three years in wood
V.S.O.P .: "Very Superior Old Pale" or 5-star; aged at least five years in wood
X.O .: "Extra Old," Napoleon; aged at least six years, Napoleon at least four years
Vintage : Stored in the cask until the time it is bottled with the label showing the vintage date
Example
Calvados - Michel Huard - 20 years
From Normandy, North France AOC CALVADOS
Michel Huard - Seventh generations family business
Harvest of apples (20 varieties) -> ferment juice -> juice becomes cider -> distilled in column still
-> Aging in oak barrel (first in new barrels for the colour) for 20 years of ageing
Taste: Clean on the apple, floral, powerful nose; balanced with apple aromas, clear and persist for a longtime.
Best to serve as a digestif after meal
Eau-de-Vie
A category of brandy that is unaged and distilled from any fruit other than grapes. French for “water for life”
France is revered as the motherland of modern-day brandy, high-quality eau-de-vie also comes from Southern Germany, Austria, Switzerland, Northern Italy etc
Traditional eaux-de-vie include pear (Poire Williams), yellow plum (mirabelle),raspberry (framboise), apricot (blume marillen), cherry (kirsch), apple (pomme) andpeach (pêche)

Eau-de-Vie Making
Depending on the fruit, there are two methods of production.
Fermentation Crushed and fermented fruit into cider before going through distillation—for stonefruit, the option is with or without the stones.
Maceration For soft fruit with lower sugar levels like raspberry, another method is to skip fermentation and instead macerate in neutral alcohol for flavour extraction.
To preserve the natural fruit characteristics, most eau-de-vie is batch-distilled in a copper pot still , typically once for macerated fruit and twice for fermented fruit .
Before bottling, the distillate is often left to “mellow” for a period, either in stainless steel tanks or glass demijohns.
Example
Eaux De Vie Louis Roque La Vieille Prune (old plum brandy)
From Souillac, South-West France
Louis Roque - Family distillery since 1835, moved to Souillac in 1905 One of the most reputable eau de vie from France
plums (10 different varieties) crushed -> juice fermented -> distilled (in Argmaganc method) -> aged in Limousine oak for 3-4 years
Taste: Boisterous fruit and esters burst off the nose, with vibrant oxidation and rich, nutty marzipan notes from the plum pits. The palate is deep and oaky, full of raisins and prunes.
Best to serve as a digestif after meal (prune is known for digestive virtues)
Liqueur
Sweetened spirits with various flavours, oils, and extracts added; base spirit for liqueurs can be rum, whiskey, brandy, and other liquors.
range from a low 15% ABV to a strong 55 % ABV
Can be used for making cocktails, or be enjoyed neat, chilled, or on the rocks.
Wide range of flavours, from coffee to almond to orange. There are also cream liqueurs ,like Baileys Irish Cream, and crème liqueurs , which are much sweeter and likened to a potent syrup, like crème de cacao.