VISITORS to Cotehele Mill in East Cornwall will be able to sample crumble-based recipes using Cotehele milled flour during Crumble in the Jungle weekend on Saturday and Sunday (September 13 and 14). Sally Newton, custodian at the National Trust mill, near St Dominick, said the recent rain had been a lifeline to keeping the mill turning: 'We've been able to top up our flour supply just in time for our annual crumble celebration.' Cotehele Mill on the Morden stream has existed since medieval times. From the 1860s, for almost a century, it was run by the Langsford family, after which it was restored by the National Trust and then opened to visitors as a working watermill in 1973. The mill uses organic wheat from Tamarisk Farm in Dorset. During Crumble in the Jungle weekend, volunteer bakers will combine wild, orchard and garden fruits in the crumbles made in the demonstration bakery. Visitors will be able to sample the crumbles and pick up crumble recipes to take home.  Nineteenth century artisan workshops have been recreated to show how craftspeople worked over 100 years ago; and the hydro-electric turbine just upstream, which runs from 5pm to 11am every day when the stream is high enough, has so far produced over 19,000 kilowatt hours of electricity since it was installed four years ago. Sally is training a small team of volunteers to work as millers. Anyone interested can get in touch on 01579 350606. Saturday, September 13 will be Heritage Open Day, when everyone is invited to the mill, Cotehele gardens and house for free. Normal admission charges apply on Sunday, September 14. Cotehele Mill is open daily from 11am to 4.30pm. For more information visit http://www.nationaltrust.org.uk/cotehelemill">www.nationaltrust.org.uk/cotehelemill