Banning plastic bags can be a lifesaver | Brief letters

Rwanda’s plastic bag ban | Sugar in recipes | School funding | Autocorrect | Tessa JowellWhile “other East African nations are considering following suit” (Nairobi feels the force of world’s most draconian plastic bag ban, 26 April), Rwanda banned plastic bags in 2008. Plastic bags can trap pools of water which host mosquitos so their ban helps fight malaria.
Alex Morton
London• In Saturday’s Feast Ottolenghi’s tamarind recipes all call for