1kg Bag of Extra Light Dried Malt Extract (DME). For a bulk quantity of 1kg bags see KB22537 - 

Excellent for boosting the gravity of your beers without detracting from the flavour of your brew. 

This is almost a must-have for anyone making yeast starters. In combination with a little bit of yeast nutrient, you'll be giving your brew the best start possible.

EBC: 9.5