Learn how to make yogurt and a solar oven inside a cardboard box. This is a great project for kids to learn about solar energy. Watch and learn on Gardenfork and visit our viewer forum www.green-house.tv Distributed by Tubemogul.

Video Transcription

Male: Come here—hey everyone! Today on Gardenfork, we are going to try and make a solar oven out of a cardboard box and make yogurt, which I thought it will be kind of fun to do. There is also stuff in the web about making solar ovens, and I thought let us make it simple, let us make one out of cardboard, you know. And, I saw some cool stuff, I will make them on the cardboard box. And, the beauty of baking yogurt in a solar oven is it does not have to get really hot. It has to be about 105 to 110 degrees. So, I think this would be fun, I have been thinking about this all week, about how to do it, and I do not know if I am going to do it right but that is the beauty of Gardenfork, is it not—whether it is going to work or not, so we will see, all right. Let us go in the chicken, take the pots, get a cardboard box and see what happens, all right? All right, so I thought we try this, I have been thinking about this for a while about different things that you could do at cardboard boxes in cooking. So, I went to the food cart and I got a cardboard box. I spray painted the interior, black. Yogurt only needs to be maintain at temperature about 105 to 110 degrees. So, this is a very simple solar oven, but we are going to make some more of this, this is very excited. Use your knife—be very careful when you are cutting, Rambler sharp knife is much better than a doll knife. And, I cut the right side, we are going to have to take the cover back shut again. Female: You have not still holding here down? Male: Yes, well, that was an accident. Female: Sharpness. Male: All right! So I am going to cut—so this is going to be like—almost like a picture frame here. So, about an inch in, so this is kind of like a—this is the top. And, again, what this is totally—see of the pans here. All right now, we are going to do the same thing to the front of the box. All right, I am going to pop that out. Okay, so this, I am just going to overlap a little bit and take by in here, okay? And, I am going to cover this top with the very solid material. I think this is a great project for your family, get your kids away from the computer and oven on the yard. What this is going to do is the Sun—the Sun is going to come in, it is going to come in and heat this box up. But, what this reflector will do is it will reflect additional sunlight in to the box. I do not know, I just thought this all this morning, so we will see what happens. We need to keep the heat inside the box, and to that, we are going to use another very high-tech material here, plastic wrap. I have also read that those plastic bags that you roast Turkeys in, the plastic for that is really good. Before we want to—we do not have to make a super hot oven room, it is about a 110 or 105 degrees, and I think we can do that with a simple box. But see, I am just putting some tape on the sides, seal that edge pretty good. Now you are probably asking, how are we are going to get the Yogurt in there? All right, so to get the Yogurt in here, we are going to cut an access lock, just very lightly store that like that, hold that, there you go. Okay, oven is complete, so you milk here, which we scald it to a hundred and eighty degrees. And then, we have lower the temperature down to between 90 and 110 degrees. I just put it in the freezer to do that, and then I used Mason jars like this. And, you have to sterilize this jars. And, I read what people put them in of that of boiling water or put them in the dishwasher with the heat setting on, but I remember that you can sterilize your cutting boards by putting them in the microwave. So, we are going to sterilize our Mason jars by putting them in the microwave, I think that will work. To make your Yogurt, you are going to use any kind of yogurt. This is on organic yogurt. Ideally, it is like just a plain but I actually have not some Peach yogurt, so that is what we are going to have. Female: Usually a chocolate. Male: I like chocolate yogurt, a hipping tablespoon of yogurt per quart of milk, all right. You could also use yogurt starter. I like my yogur