Water based composition (I) comprises 2-5 wt.% of alginate, 1-2.5 wt.% of starch and 0.6-1.3 wt.% of carboxymethyl cellulose. Independent claims are included for: (1) manufacturing (I) comprising a step of filtering (I) through a filter with a mesh size of = 120 mu m； and (2) a method for coating a foodstuff with an edible vegetal casing comprising: obtaining (I)； immersing a substantial part of the foodstuff in (I), or spray coating (I) around a substantial part of the foodstuff, or co-extrusion of (I) around a substantial part of the foodstuff, so as to coat the foodstuff； and contacting the coated foodstuff with a gelling agent, so as to fix the casing.
