We are so lucky to have so many options for cooking our foods, not to mention the option to not cook at all! This got me thinking about the fact that we do rely on our outdoor equipment and cookware when it comes to outdoor cooking. Even if you’re a person who has experience campfire cooking, you likely do this style of cooking with one type of fire setup .
Let’s look at some of the options for setting up an outdoor fire that don’t include purchased equipment, just the natural elements found outdoors – rock, tinder, kindling, and logs/wood. As I always like to remind you, though you may not use this information immediately, you should read it and keep a reference handy for when a situation may arise that you need it, such as a natural disaster, power grid emergency or other such catastrophic event.
You’ve likely heard this phrase before whether as a child, adult or at intervals of both. “Fire is meant to be respected.” I’m going to go one step further. Fire should not only be respected, it should be honored and appreciated for all it can offer. I’m going to point out to you just what other uses fire can present to you. Perhaps next time you light a fire whether in your charcoal chimney starter, charcoal grill, fireplace, or even outdoor fire pit, you’ll give some pause to the other uses to keep in your knowledge arsenal for times you may need this information. As I age, I am always in tune with my environment and how I can use it not only for fire cooking but to survive if a situation I can’t control should call for it.
Fire Cooking Use #1: Heat
If you are fortunate as I am to have an outdoor source of fire other than your traditional grill, then you’ve likely found yourself enjoying this first benefit of fire. Heat. But you likely don’t know about the radiant heat quality of fire. With a single fire, only the surfaces facing it are warmed. When it comes to surviving outdoors with heat from a fire, this is when you will want to learn about reflective ability of the fire.
If you have a choice in fire building location when you need it for survival, elect to build one near a large rock or tree stump but add a reflector component on the other side of the fire. This will allow the rock or tree stump to absorb the heat from the fire and then reflect it back. By adding a reflector on the other side of the fire, you will enjoy heat both on your back and front, the ideal for surviving if you must rely on fire for body temperature. Plus, the two reflecting points will force the smoke to go upward allowing you to avoid smoke in the eyes.
Fire Cooking Use #2: Signaling
We all know that fire makes smoke and that smoke acts as a signal. When you want to be found, this is the perfect means for attracting attention. What you need to know is that the terrain plays a part in being seen. If you want to use smoke to signal for help, then seek high points for making one.
Fire Cooking Use #3: Water Sterilization
If you are in a dire situation where you’ve been unable to bring many supplies with you, know that fire can aid your ability to stay alive. You can only survive 3 days without water so finding water is a priority. You can sterilize water found from any source for consumption by boiling it which is a temperature of 212°F. Essentially, 1 liter of water per person will get you through survival of 3-4 days.
Fire Cooking Use #4: Preserving Foods
We tend to rely on someone else in the food production chain to preserve food but you may find a time where you either want to do this for your own family or you have to. Drying, smoking, pickling, and salting are methods of preserving foods from micro-organisms that spoil food. When you smoke meat you dehydrate it and produce a protective coating on the outside that prevents bacteria and condensation from penetrating. This is a means of ensuring you have a food supply that can keep you alive for quite a long time.
Fire Cooking Use #5: Protection
If you’ve ever been camping or glamping in a forest area, then you know that you are never alone. Wildlife dominates in these areas. Fire can be a protector when it comes to keeping these visitors at bay. Always be sure to have a portable fire set up such as a rag tied to the end of stick or similar tool to use as a portable weapon should a forest resident elect to come close to you.
Do you have another survival use for fire? Leave us a comment to share your views. Bringing you informative recipes, techniques, and the science beyond the fire, smoke, and flavor. That’s SmokinLicious®!
Let me start this article by first reminding you that wood contains hundreds of compounds that honestly, we don’t know everything about. For this reason, I am only speaking today regarding those known compounds and what they contribute to foods cooked by wood fire. Specifically, I’ll be looking at lignin which is the only large-scale biomass source that has aromatic functionality. In English, this is what gives wood-fired foods the distinct flavor and aroma.
Often, you read about specific flavors and aromas as they apply to meats but today, I want to delve into the compounds that are most prevalent by wood species and what they offer to food.
Lignin- A Refresher
Lignin is one of the primary compounds responsible for cell construction in a tree and makes up 15-30% of wood cells. It has a primary role in conducting water to feed the tree’s cells and when burned, yields a tremendous amount of energy. Plus, lignin produces rigidity in cell walls which prevents rot.
As a polymer or large molecule composed of many repeated subunits that bond together, it is the only one that is not composed of carbohydrate (sugar) monomers. Because lignin is a polymer, there are many possible bonding patterns between the individual units, thus, we don’t have full knowledge of all the possibilities.
What we do know is lignin contains phenols or hydroxyl groups which are alcohols. As these compounds work together, they produce a preservative action on the food which is antibacterial in nature. The surface of the smoked food is modified with resulting flavors and aromas which are associated with barbecued foods. Let’s take a closer look at these smoke vapor flavors.
If you recall our publication on wood-tar creosote we tapped into the science of wood-tar creosote and its purpose as a preservative as well as producer of flavor, color, and aroma to barbecued foods. In that article, we just barely mentioned the compounds responsible for the flavors. Let’s provide you with the main compound list and what the odor and flavor descriptors are.
Phenol: this compound provides the sharp, robust aromas and the astringent, sharp aftertaste to wood fired foods.
Dimethylphenol: another compound that has a sharp, robust odor that also has a sweet aromatic undertone. Flavors are sweet, charred, and astringent.
Isoeugenol: this is the compound associated with vanilla aromatics in addition to sweet and fruity. Flavor descriptors include sweet, smoked-ham notes, hydrolyzed vegetable protein-like, with clove-like undertones.
4-Methylguaiacol: another compound that includes vanilla-like, fruity, cinnamon-ish, and smoky odors, with flavors of caramel, vanilla, sweet, and pleasant notes.
o-Cresol: odors are smoked sausage like with robust, sharp undertones. This one on its own can produce more unpleasant smoky flavors.
Guaiacol: Smoky, sharp, aromatic aromas with flavors that are spicy, sharp, sweet and dry. This is the yellowish aromatic oil that forms from creosote.
Syringol: Sausage-like aromatic that is sharp and sweet, with a spicy note. These flavors include whiskey notes with smoky-char taste.
Lignin Levels in North American Hardwoods
I’m going to report the lignin levels of common North American hardwoods derived from the Klason lignin method, which values the residue remaining after solubilizing the carbohydrate with strong mineral acid. What follows are percentages of oven-dried woods with temperatures ranging from 68°F/20°C to 248°F/120°C.
Acer saccharum Marsh./Sugar Maple = 22%
Alnus rubra Bong./Red Alder = 24%
Betula alleghanienstis Britton/Yellow Birch = 21%
Carya glaubra (Mill.)/Sweet Pignut Hickory = 24%
Carya ovata (Mill.) K. Koch/Shagbark Hickory = 21%
Fagus grandifolia Ehrh./American Beech = 22%
Fraxinus Americana L./White Ash = 26%
Populus tremoides Michx./ Quaking Aspen = 19%
Prunus serotine Ehrh./Black Cherry = 21%
Quercus alba L./White Oak = 27%
Quercus prinus L./Chestnut Oak = 24%
Quercus rubra L./Northern Red Oak = 24%
Quercus stellate Wangenh./ Post Oak = 24%
What do all these percentages mean when it comes to your barbecue? You can assume that the higher numbers mean there are larger numbers of compounds at work to flavor your foods. It’s obvious that woods like hickory and oak have great percentages of phenol, guaiacol, and dimethylphenol, since these woods tend to produce the boldest flavors. Those hardwoods like cherry, alder, and maple have the compounds of methylguaiacol and isoeugenol coming forward in the flavors which results in sweeter and more toned coloring to meats. Another factor that must be kept in mind when examining lignin is the heat level the wood is exposed to. Cook at a higher temperature and these compounds can become muddier as combustion occurs more rapidly producing ash accumulation that can change flavors and aromas quickly. All factor in to the resulting flavor, color and aroma of barbecued foods, whether animal protein, vegetable, fruit, or other. This just further supports that wood-fired cooking is an art that requires a balanced hand that understands the importance of controlling as many factors as possible, primary of which is cooking temperature and airflow to bring out the highest percentage of beneficial compounds the wood can offer.
What is your favorite hardwood or mixture of hardwoods to cook with? Leave us a comment to share your views. Bringing you informative recipes, techniques, and the science beyond the fire, smoke, and flavor. That’s SmokinLicious®!
