Buy a bottle of Savoie wine (Apremont or Chignin-Bergeron, €10-20) in Les 2 Alpes village (1,650m). DAY 1 - Taste at village level: Open bottle, pour small glass, write notes (flavor, acidity, body). DAY 2 - Taste at mid-mountain (~2,400m): Bring bottle + cup on lift, taste at mid-station restaurant. DAY 3 - Taste at Le 3200 (3,200m): Final tasting at glacier level. The wine is the SAME bottle, but atmospheric pressure, oxygen levels, and your palate's perception change at each elevation. At 3,200m, acidity will be PIERCING compared to village level. Take written notes at each elevation—you've just learned what sommeliers mean by 'altitude affects wine.'
🔄 BACKUP: If you don't want to carry a bottle, order the SAME wine by the glass at village restaurant (€8), mid-mountain (€10), and Le 3200 (€12). More expensive (€30 total) but same learning.