Dwarven stout

The Dwarven Stout is a drink which aids your mining and smithing, though it seriously addles your melee combat skills. It is sold at the Rising sun bar, Falador.

Effects
The most important effect is that you can enter the Minining Guild at level 59 instead of 60.
 * Increases mining and smithing level by 1 for around 30 seconds
 * Lowers attack by 4
 * Lowers strength and defence by 3

The reduction in your other skills takes longer to recover, use extreme caution if you get a rock golem while mining, and you have recently drunk one.

Conclusion
If you use this to mine ore, you will be unlikely to be able to smelt it, the exception being to obtain coal at level 29, if you took on The Knight's Sword quest for the large smithing experience reward.

If you use this to smelt bars, you will also need it to make the most unrewarding item, the dagger.

It becomes almost essential, however, to enable the making of better items at one level earlier, for smiths at any level in any metal, and unless using Doric's anvil north of Falador, any serious smith will need to have some of these banked.