Why an Old Fashioned feels stronger than a Daiquiri even though both contain 2 ounces of base spirit.
Thermal Physics of Shaking
Dave Arnold documented in Liquid Intelligence that cooling cannot occur without ice melting. To cool 100ml of warm liquid down below freezing, an exact thermodynamic quantity of ice must absorb latent heat of fusion and melt into water. That is why vigorous shaking instantly adds 30ml+ of pure water to a 90ml cocktail, reducing serving ABV from ~35% down to ~18%–22%.