13,600
edits
Changes
updated Lacto starter info
# Make a 1 liter starter of '''1.040 SG (10°P) Dried Malt Extract wort with 10% apple juice + 20 grams of chalk (CaCO3) + yeast nutrients''' for growth results that are close to MRS media growth results (as per [https://eurekabrewing.wordpress.com/2015/05/18/evaluate-starter-media-to-propagate-lactobacillus-sp/ Samuel Aeschlimann from Eureka Brewing Blog]). The chalk won't dissolve into solution; don't worry about it. <ref name="sam_starter">[https://eurekabrewing.wordpress.com/2015/05/18/evaluate-starter-media-to-propagate-lactobacillus-sp/ Evaluate starter media to propagate Lactobacillus sp., Eureka Brewing Blog, by Samuel Aeschlimann.]</ref>.
# Best practice is that starters should not be aerated, although there may be an exception to this for ''L. brevis'' <ref name="brevis_aeration"></ref>. Some people prefer to stir their starter with an airlock in order to keep the bacteria in suspension, others do not use a stir plate and keep the starter still.
# The starter should be held at the temperature best suited for the culture as shown in the [[Lactobacillus#Culture_Charts|Culture Charts]].
# Reference the above [[Lactobacillus#Culture_Charts|Culture Charts]] for how long the starter should be incubated for before pitching. If a stir plate is not used, one indication that the starter is done will be when the top of the starter begins to clear <ref name="Sam_starter2">[https://www.facebook.com/groups/MilkTheFunk/permalink/1131778916850321/?comment_id=1131806746847538&offset=0&total_comments=6&comment_tracking=%7B%22tn%22%3A%22R2%22%7D Conversation with Sam Aeschlimann of Eureka Brewing Blog on MTF. 08/20/2015.]</ref>.# Pour all of the liquid of the starter into into the wort/beer, leaving the sediment behind. The chalk will sediment outmuch earlier than when the ''Lacto'' begins to sediment due to the [https://en.wikipedia.org/wiki/Stokes%27_law chalk particles being much larger] <ref name="Sam_starter2"></ref>, and is not desirable to pitch into the wort/beer. Avoid cold crashing because it can have an adverse effect on the bacteria's health <ref>[http://suigenerisbrewing.blogspot.ca/2015/05/lacto-starters.html Heit, Bryan. Lacto Starters. Sui Generis Blog. Retrieved 6/15/2015.]</ref><ref name="sam_starter"></ref>.
See [http://suigenerisbrewing.blogspot.ca/2015/05/lacto-starters.html ''Lacto Starters'', by Bryan Heit of Sui Generis blog] for additional information on ''Lactobacillus'' starters.