Liffe coffee ends higher, May premium widens:
* Liffe May robusta coffee ends $17 higher at $2,613 a tonne. May's premium to July widened, buoyed by tightness in available deliverable supplies.
* Liffe July cocoa ends 43 pounds higher at 2,051 pounds a tonne. Market continues to be underpinned by conflict in top grower Ivory Coast.*****
* Liffe July cocoa