SB 5.20.7

plakṣaḥ sva-samānenekṣu-rasodenāvṛto yathā tathā dvīpo ’pi śālmalo dvi-guṇa-viśālaḥ samānena surodenāvṛtaḥ parivṛṅkte.
Synonyms: 
plakṣaḥ — the land known as Plakṣadvīpa; sva-samānena — equal in width; ikṣu-rasa — of sugarcane juice; udena — by an ocean; āvṛtaḥ — surrounded; yathā — just as; tathā — similarly; dvīpaḥ — another island; api — also; śālmalaḥ — known as Śālmala; dvi-guṇa-viśālaḥ — twice as big; samānena — equal in width; surā-udena — by an ocean of liquor; āvṛtaḥ — surrounded; parivṛṅkte — exists.
Translation: 
Plakṣadvīpa is surrounded by an ocean of sugarcane juice, equal in breadth to the island itself. Similarly, there is then another island — Sālmalīdvīpa — twice as broad as Plakṣadvīpa [400,000 yojanas, or 3,200,000 miles] and surrounded by an equally broad body of water called Surāsāgara, the ocean that tastes like liquor.