Problem: Article: Since you're going to the trouble of making sour cream, use the freshest cream you can find. Full-fat, organic heavy whipping cream is best. Pasteurized heavy cream ends up with a consistency closest to store-bought sour cream. If you prefer a thinner consistency or are looking for a low-fat option, you can use half and half instead. Unpasteurized raw cream is also a great base for sour cream. The result will be lighter than the sour cream made with pasteurized heavy cream. Avoid ultra-pasteurized cream or half and half. This product produces inconsistent results when cultured. Sour cream is produced by mixing cream with a bacterial culture that thickens the cream and gives it a slightly sour flavor. Sour cream starter culture contains milk as well as live, active cultures. It can be found in natural food stores or online and comes in packets (usually four or more to a box) with enough culture to make up to a quart of sour cream. Extra packets of culture can be stored in the freezer for up to 12 months. Live, active cultures in sour cream starter culture include lactococcus lactis subsp. lactis, Lactococcus lactis subsp. cremoris, Lactococcus lactis biovar. diacetylactis and Leuconostoc mesenteroides subsp. cremoris. Once you have made sour cream with a starter culture, you can use that sour cream to make more. The process is similar to making sourdough bread with a sourdough starter. If you do not want to track down sour cream starter culture, you can make a version of sour cream a tablespoon of cultured buttermilk per cup of cream. The consistency and taste will be more similar to that of buttermilk. You can also make kefir cream, another type of cultured cream, using kefir grains. Sour cream should be stored in a clean glass jar. During the culturing period, it needs a ventilated cover to allow air to flow through the jar while also keeping out bugs and other contaminants. A tight-weave cloth, such as cheesecloth, makes a fitting lid when secured with a rubber band. For storage, you will need a regular airtight lid. Be sure the jar is clean and sterile. If you've used the jar before, boil it for five minutes and let it completely dry before using it for sour cream. If you don't have cheesecloth, a paper coffee filter also works as a lid.
Summary: Purchase a quart of fresh cream. Purchase sour cream starter culture. Prepare a jar and ventilated cover.

Problem: Article: Use a glass measuring cup that is large enough to hold the vinegar and not spill over if you were to dip a rag into it. Use a glass container rather than plastic, since you will need to heat up the vinegar. One of the great things about removing paint from glass is that you probably already have everything you need at home. You don't need to use any chemical-based productsjust white vinegar and dish soap should do the trick! There's no need to cover the bowl, but do keep an eye on it as it heats up so you can stop the microwave once the vinegar starts to bubble. Depending on how strong your microwave is, this might take a little more or less time than indicated. The rubber gloves will keep your hands from getting burnt in the hot vinegar. A smaller rag, about the size of a washcloth, works well for this project. A hand towel could be too bulky and get in the way while you're working. You could also use a clean sponge for this step, too. Use some elbow grease to really rub the paint and saturate it with the white vinegar. This should soften the paint, and it may actually completely remove it! If it doesn't come off yet, that's totally okay. Just move on to the next step. If the paint does come away completely from using the white vinegar, simply spray the window with glass cleaner and wipe it down to clean it off. Put the dish soap into the bucket first so it can get sudsy while the bucket is filling with water. Try your best to do this right after the vinegar step so that the paint doesn't have a chance to dry again. Really saturate the paint with the soapy water. If you're concerned about the water running down the wall or hitting the floor, lay down a towel underneath of where you're working. Use firm pressure, and only scrape in one direction. Remoisten the paint from time to time with the soapy rag to keep it lubricated. Try to get the edge of the razor underneath the entire section of paint so that it comes away in one piece. Take your time with this part of the process. You want to avoid scratching the glass, which can happen if you rub back and forth or scrape too quickly. This should get rid off all the vinegar, soap, and remaining paint flakes. Wipe the cleaner away with a clean rag or with paper towels. If you notice you missed a section of paint after you clean the window, go back and repeat the soapy water and scraping steps until it comes clean.
Summary:
Measure 1 cup (240mL) of white vinegar into a glass measuring cup. Microwave the white vinegar for 30 to 60 seconds until it comes to a boil. Put on rubber gloves and dip a clean rag into the white vinegar. Scrub the paint with the vinegar-soaked rag. Fill a bucket with warm water and 1 tablespoon (15mL) of dish soap. Soak a sponge or rag in the soapy water and wipe down the paint spots. Run a razor blade over the paint very slowly at a 45-degree angle. Use glass cleaner and a clean rag to wipe down the window.