Q: 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.
A: Purchase a quart of fresh cream. Purchase sour cream starter culture. Prepare a jar and ventilated cover.

Article: You'll need to make sure you can recall the specific information, apply it to new or changing situations, and analyze and synthesize it to determine solutions or evaluate the usefulness of solutions. To ensure that you know everything you need to know for the test, try to start studying several months in advance. When preparing for a test, it's a good idea to do a bit of studying every day, instead of cramming at the end. If you take time every day to study, you will absorb the information more effectively. This will help you assess your level of knowledge. You can also register for a self-assessment examination, which consists of 75 test questions modeled on the questions in the official examination. You can do this online through the NAECB website, or by mail. If you choose to do it by mail, you'll need to send in an application, which is located in the candidate handbook.  In order to register, you will follow a link to the testing organization that NAECB uses to proctor their exams. This company is called PSI Services. If you do not live in the United States, you can still take the exam. You will simply need to schedule the exam over the phone or via email with the NAECB.
Question: What is a summary of what this article is about?
Study the materials thoroughly. Take a sample computerized exam on the NAECB website. Register for the examination.

Q: If your guinea pig is docile, you can simply pick it up and place it in the carrier. Usually, you put one hand under the guinea pig's belly and one under the guinea pig's hind legs.  If the guinea pig is skittish, you may need to have a stronger grip on the guinea pig. Corner it in its cage and get ahold of it as you would with a more docile guinea pig, but hold on a little tighter. Make sure the carrier is very close by, so you can quickly move the guinea pig straight into the carrier. Once the guinea pig is inside of the carrier, close it properly. Make sure the carrier is secure and your guinea pig is as comfortable as possible. You can put two guinea pigs in the same carrier. If you are traveling with more than one guinea pig, it is perfectly fine to put them both together in one carrier. However, you must keep checking on them both to see if they are getting along. Good locations include in a footwell (it may be warmer here than the rest of the car) or on a seat with the seat belt fastened. Bad locations include places where the carrier will slide around and jolt when you stop, near the heating and air-conditioning (because it could be too hot or too cold), in the trunk, or on someone's lap (in the event of a crash, the carrier could harm the person holding it).  Also make sure that your guinea pig's cage will not be in the sun while you drive. This can quickly lead to the guinea pig getting overheated. You should also avoid putting your guinea pig's cage next to your stereo speakers if you are planning on playing your stereo. Guinea pigs are sensitive to sound, so they should not be exposed to loud sounds from your car stereo. Begin to drive slowly and then pick up speed as if not to startle the guinea pig. Take turns slowly and try to make all driving adjustments, such as braking, gradually. The goal should be to give the guinea pig a calm ride in the car. Abrupt movements and aggressive driving will move your guinea pig around in its cage involuntarily. This will most likely agitate the pig. If you are taking a long drive, for instance, if you are moving cross country, you need to check in on your pet regularly. Make sure it is doing ok and that its food and water are still secure.  For example, take a five-minute break about halfway through your journey if you are traveling for over thirty minutes. Take this time to check their food and hay supply, as they need an unlimited supply of these. If you are on a long drive and your guinea pig's food or water spills all over its cage, clean it up. You don't want your pet sitting in a dirty cage for hours while you drive. Guinea pigs may naturally hide and be fearful during a car ride, so this is not necessarily a sign of true distress. However, there are some signs that the guinea pig is in real distress and needs attention. These can include repeated loud squeals, pacing, cowering in fear, and staying crouched over.  If you have had your guinea pig for a while, you should know if it is acting normally. However, remember that a guinea pig being transported is likely to exhibit some unusual behavior. Talk to the guinea pig during the ride. It may be comforting to the pig to know that you're there with it. Never leave your guinea pig in the car alone! It can get overheated very quickly in a closed up car.
A:
Place the guinea pig in the carrier. Put the guinea pig cage in a secure location in the car. Drive your car responsibly. Check on the guinea pig regularly. Look for signs of distress.