Just arrived into the shop: Propper Starter - this is a concentrated wort in a can. To make a yeast starter, all you need to do is pour one can of this and an equal amount of water into your sanitized flask or jar, add yeast, aerate & cover. Produces one liter of wort at the a good starting Specific Gravity (about 1.040). From the producers of Omega Yeast. $4.99 each or $17.99 for a four-pack.