Srimad-Bhagavatam: Canto 5 - Chapter 1 - Verse 7
Sanskrit:
प्लक्ष: स्वसमानेनेक्षुरसोदेनावृतो यथा तथा द्वीपोऽपि शाल्मलो द्विगुणविशाल: समानेन सुरोदेनावृत: परिवृङ्क्ते ॥ ७ ॥
ITRANS:
plakṣaḥ sva-samānenekṣu-rasodenāvṛto yathā tathā dvīpo ’pi śālmalo dvi-guṇa-viśālaḥ samānena surodenāvṛtaḥ parivṛṅkte.
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.