प्रसन्नायोगः श्वेतसुरायाः ॥ कZ_०२.२५.३१ ॥
prasannā-yogaḥ śveta-surāyāḥ
The formulation prescribed for prasannā applies likewise to śveta-surā (white liquor).
To reduce complexity in regulation and enforcement by reusing an approved standard rather than issuing redundant formulations.