Don’t do it. Even with the large-scale equipment we have available for keeping microbes alive at our compost farm, it is a tremendous effort. The best thing you can do is to apply all of the compost you have in May to your plants, and then cover it with several inches of mulch or another form of moisture protection barrier. Then, consider using bokashi during the seemingly endless period when the daily highs are well above 90°F.
Our reasoning is as follows. The microbes in your compost pile are the most dependant on moisture, and are the engine that converts your organic matter into compost. It is the microbes that need the time, once sufficient moisture is again available, to reproduce many times over, and re-juvenate your compost. If you have compost that needs rejuvenating, bring the moisture levels back up to a minimum of 35% and as high as 50% throughout, and then inoculate the pile with a brewed compost tea or probiotics. Because the dry hot air will quickly remove moisture from all living things, it is important to get your compost into the soil as quickly as possible. Keep burlap covers around the compost pile to prevent the sun from evaporating the moisture.
The Bokashi system allows you to bury your very beneficial food scraps directly into the soil. You avoid the work of making compost, which is especially frustrating during a La NiÑa summer due to the high heat and extremely drying conditions, and the bokashi will help preserve the microbes in the soil.
