Frozen Banana — a chocolate-shelled banana on a stick

i. Origin & history

Chocolate-covered frozen bananas became popular in the United States in the mid-twentieth century, sold from beach stands, fairs and amusement parks. The place that claims them most loudly is Balboa Island in Newport Beach, Southern California, where small stands along Marine Avenue have sold frozen bananas since around the 1940s. Local accounts credit a stand owner there with selling the first ones, though, as with most simple street sweets, there are rival claims, and similar treats appeared at seaside resorts elsewhere.

Balboa Island's stands also sell the Balboa bar, a block of vanilla ice cream on a stick dipped in chocolate and rolled in toppings, and the two have become local emblems. The frozen banana's fame spread far beyond California when the television comedy Arrested Development (2003) set its story around a family whose fortune began with a frozen banana stand on the Newport Beach boardwalk — the line 'there's always money in the banana stand' made the treat something of a pop-culture reference.

The idea relies on twentieth-century conditions: cheap, year-round bananas, shipped from Central America and the Caribbean to the United States from the late nineteenth century, and electric freezers to hold them. Bananas had become the most widely eaten fruit in the country, and a chocolate coating turned them into a cheap, filling snack that seemed healthier than an ice-cream bar.

Frozen bananas sit alongside other chilled fruit treats such as frozen grapes and Mexican paletas, and among the world's banana desserts, from New Orleans' bananas Foster to the Philippines' banana cue.

ii. How the chocolate shell sets instantly

The pleasure of a frozen banana is the contrast between a thin, snapping shell and the soft, creamy banana inside. That shell depends on adding a little coconut oil to the chocolate. Coconut oil is solid below about 24 °C and liquid above it, and it has a sharp melting point. Mixed into melted chocolate, it thins the chocolate so that it coats the banana in a fine, even layer rather than a thick, gloppy one. When that thin layer touches the frozen fruit, the coconut fat and cocoa butter solidify within seconds into a hard, glossy shell — the same principle as the 'magic shell' ice-cream toppings sold in bottles.

The banana itself changes in the freezer. Bananas are starchy and relatively low in water compared with most fruit, and as they ripen their starch converts to sugar. Frozen, a ripe banana does not turn into ice but into a dense, creamy mass — which is why frozen bananas blended alone make 'nice cream'. The best bananas for dipping are yellow and just ripe, with no brown spots: they are sweet but still firm enough to hold on a stick, while very ripe bananas go mushy and slip off.

Two other details matter. The bananas must be frozen hard — at least three or four hours — so they set the chocolate instantly and do not soften while you dip. And their surface should be free of frost: ice crystals on the fruit melt into droplets of water that make melted chocolate seize and stop it from sticking. Freezing them uncovered for the first few hours, then dipping straight from the freezer, avoids that.

iii. Ingredients

Makes 6 servings · scroll the side panel to adjust

• 3 large bananas, yellow and just ripe
• 6 wooden lolly sticks or skewers
• 200 g dark or milk chocolate, chopped
• 2 tbsp coconut oil (refined, for no coconut flavour)
• 80 g salted peanuts, chopped, or other toppings
• 2 tbsp sprinkles or toasted coconut, optional
• ¼ tsp flaky sea salt, optional

Use bananas without brown spots; they hold their shape on the stick and are sweet without being mushy. Milk chocolate is the classic boardwalk choice; dark chocolate gives a less sweet, more grown-up shell. Refined coconut oil has no coconut taste; virgin coconut oil adds a tropical flavour that suits the banana well. If you have no coconut oil, a neutral vegetable oil also thins the chocolate, but the shell is softer. The classic topping is chopped peanuts; sprinkles, toasted coconut, crushed biscuits, granola or freeze-dried strawberries all work.

iv. Method

1. Line a small tray with baking paper. Peel the bananas, remove any stringy fibres, and cut each in half crossways.
2. Push a stick about halfway into the cut end of each half, gently, so the banana does not split.
3. Lay the bananas on the tray, not touching, and freeze uncovered for at least 3–4 hours, until frozen solid.
4. Melt the chocolate and coconut oil together in a heatproof bowl over barely simmering water, or in 20-second bursts in the microwave, stirring until smooth. Pour into a tall, narrow glass and leave to cool for 5 minutes until just warm to the touch.
5. Put the toppings on a plate. Working with one banana at a time straight from the freezer, dip it into the chocolate, turning to coat, and let the excess drip back for a few seconds.
6. Immediately, before the shell sets, roll it in or sprinkle it with the toppings and a few flakes of salt, then lay it back on the tray. The chocolate will harden within 30 seconds.
7. Eat at once, or return to the freezer for 15 minutes to firm, then wrap individually.

v. Tips & common mistakes

• Choose firm, ripe bananas. Brown-spotted bananas are too soft and slide off the stick; green ones are starchy and bland.
• Freeze until rock-hard. Partly frozen bananas soften as you dip, and the chocolate takes too long to set.
• Use a tall glass for dipping. It lets you coat the whole banana in one dunk with less chocolate than a wide bowl.
• Let the chocolate cool slightly. Hot chocolate melts the surface of the banana and runs off; warm chocolate clings and sets quickly.
• Work fast with toppings. The shell sets in seconds on frozen fruit. Have toppings ready and add them immediately.
• Wrap after the shell sets. Unwrapped bananas pick up freezer odours and frost; wrap them individually in baking paper and then a bag.

vi. Variations

Peanut butter frozen bananas are spread thinly with peanut butter before freezing and then dipped. White chocolate shells, tinted with a little colouring or rolled in crushed chocolate biscuits, are popular at fairs. Frozen banana bites slice bananas into 2 cm coins, dip them halfway, and freeze them as snack-sized pieces. For a dairy-free version, use dark chocolate without milk solids. Blended frozen bananas with a splash of milk make 'nice cream', a one-ingredient soft serve.

Bananas are dressed up around the world: flambéed in rum and caramel in bananas Foster, caramelised on skewers in Filipino banana cue, rolled in spring-roll wrappers in turon, or baked into Vietnamese bánh chuối.

vii. Serving & storage

Serve frozen bananas straight from the freezer on a hot day. Let them stand for 3–5 minutes first if they have been frozen for more than a day, so the banana softens slightly and is easier to bite. They make an easy party dessert for children: set out the dipping chocolate and bowls of toppings and let everyone make their own.

Once the shell has set, wrap each banana individually in baking paper or cling film and store them in a freezer bag or box. They are best within 1 week, before the banana starts to darken and absorb freezer flavours, and keep for up to 2 weeks. Do not refreeze bananas that have thawed — they turn brown and watery.

ix. More from North American

• Frozen Grapes — bite-sized fruit sorbet
• Bananas Foster — New Orleans rum-caramel bananas
• Snow Cones — crushed ice and fruit syrup
• Paletas — Mexican fruit ice pops
• Banana Cue — Filipino caramelised banana skewers
• Turon — Filipino banana spring rolls