Making them ourselves proved to be something of a challenge. To get a real beer flavor in the marshmallows, we decided to use a rich chocolate-y stout, let it go flat to get all the bubbles out, and then add it to both the marshmallow bloom and the sugar syrup. You could substitute any favorite beer in place of the stout, though we'd stay with something malty. Pale ales and IPAs would tend to make the marshmallows taste bitter (unless you're into that!).
The first few attempts resulted in beer syrup lava explosions all over our stove! Even when the beer was completely flat, the sugar syrup still bubbled up alarmingly and it was difficult to get a proper temperature reading in the foamy mess. We toyed with nixing the beer in the sugar syrup altogether, but then we felt that the flavor wasn't as strong. Instead, we switched to a larger pot and fiddled with the cooking time and temperature.
If you're worried about the sugar syrup bubbling over when you make these, replace the beer in the sugar syrup with water and just stick with using the beer in the bloom. The beer flavor won't be as prominent, but the marshmallows will still be delicious!
Chocolate-Dipped Beer Marshmallows with Crushed Pretzel Garnish
makes 18 to 22 marshmallows, depending on how you cut them
For the Bloom:
1 1/2 tablespoons (just under 1/2 ounce) unflavored gelatin
2 teaspoons vanilla extract
1/3 cup (2.5 ounces) flat dark beer
For the Sugar Syrup:
1/4 cup (2 ounces) flat dark beer
1/2 cup + 2 tablespoons (5 ounces) corn syrup or sugar cane syrup
3/4 cup (6 ounces) granulated sugar
For Coating and Topping
10-12 ounces milk chocolate
2-3 teaspoons canola oil, optional - for thinning the melted chocolate
1/2 cup stick pretzels
To flatten the beer, open the bottle and let it sit overnight. If you're in a rush, pour it into a bowl and stir the beer with a whisk to release as much of the carbon dioxide as possible.
Spray one standard bread loaf pan (8.5" x 4.5" or close) with nonstick spray or line it with parchment paper and then spray with nonstick coating. If using parchment, tape the flaps to the outside of the pan so the paper stays in place when you spoon in the marshmallow.
For the bloom, sprinkle the gelatin in the bowl of a stand mixer. Mix the vanilla and flattened beer, and pour this over the gelatin. Whisk until no lumps remain. Set the bowl back into your mixer and fit the mixer with a whisk attachment.
For the sugar syrup, combine the flattened beer, corn syrup, sugar, and salt in a 4-quart saucepan or larger. Clip a candy thermometer to the side. Turn the heat to medium-high and bring the sugar mixture to a boil. As the syrup heats, it will foam up to nearly fill the pan. Keep an eye on it so it doesn't boil over. When the mixture is between 225° and 230°, let it bubble for another 5 minutes and then remove it from heat. (Ideally, the syrup should reach 240° - 250°, but I couldn't get an accurate temperature reading in the foam. If your syrup starts to edge up toward 250°, take the pan off the heat and proceed with the next step.)
With the mixer on low speed, carefully pour the sugar syrup down the side of the bowl into the gelatin bloom. Turn the mixer to high once all the syrup has been added and let it whip for 8-10 minutes, until it looks like glossy meringue and is very thick. Pour the marshmallow into the loaf pan and let it cure, uncovered, for 10-12 hours or overnight.
When the marshmallows are cured, rub the top with a little powdered sugar and turn the marshmallows out onto a cutting board. Rub the top with more powdered sugar. Cut into 18-22 squares of equal size.
Melt the chocolate either over a double-boiler or in 30-second bursts on HIGH in the microwave, stirring between each burst until the chocolate is melted. If the chocolate seems too thick, whisk in the canola oil one teaspoon at a time until the chocolate is thin enough to coat.
Coat each marshmallow entirely and set them on a piece of wax paper to dry. We use a dinner fork and a chop stick to help turn the marshmallows in the chocolate and slide them onto the wax paper. While the chocolate is still wet, sprinkle the tops of the marshmallows with crushed pretzels. The chocolate might have difficulty setting up if the weather is very humid; try putting the marshmallows in the fridge to help things along.
Marshmallows will keep in a covered container for several weeks. In the summer, store in the refrigerator to prevent the chocolate from melting.
• We prefer the taste of milk chocolate with these beer marshmallows, but you can certainly use dark, semi-sweet, or bitter-sweet chocolate if you prefer.
• Instead of coating the marshmallow entirely, try dipping one side in chocolate and the other in crushed pretzels. You can also roll the marshmallows in crushed pretzels alone (though skip sprinkling them with powdered sugar when you cut them into pieces; just use crushed pretzels instead).
• Instead of pretzels, we're also eager to try popcorn!