In order for indoor plants to always be healthy and green, they need useful substances that can be obtained with the help of fertilizers. However, do not rush to spend money on special fertilizers, because leftover food can also come in handy.
If you plan to cook pea soup, the water after soaking the peas will be a good supplement for plants. Starch, which is released during soaking, has a large number of useful substances. Also, water after soaking other leguminous crops will do. Do not rush to pour it out, rather water the plants with it and you will definitely see a good result. Such fertilizer can be used often, because it is impossible to overfeed indoor plants in this way.