Homemade Nutrition: Maltodextrin Fructose Mix

Ditch the $4 Gels: How I Mix My Own Homemade Nutrition Drink and Hit 100g Carbs/Hour for Pocket Change

I'm hovering around 8 hours of training per week right now — swim, bike, run, repeat — and for too long I treated commercial gels and drink mixes like a utility bill I just had to pay. A box of SiS gels here, a Maurten 320 sachet there, a tub of Beta Fuel when I felt fancy. It quietly hemorrhages cash when you're doing 3–4 hour rides and actually need 80–100g of carbs per hour to perform. Then I did the maths, hit a breaking point somewhere around my fourth overpriced electrolyte sachet of the week, and switched to making my own homemade nutrition drink using raw maltodextrin and fructose. Game changer. Not just financially — operationally. When you mix it yourself, hitting a precise carb target isn't guesswork anymore. You weigh it, you know it. Done.

The science behind this is rock solid. Dual-source carbohydrate blends use two different intestinal transporters to push absorption past the ~60g/h glucose ceiling — and that's exactly the mechanism Maurten, SiS Beta Fuel, and Precision Hydration Carb are all charging a premium for. You can replicate it at home for roughly 10–15% of the cost. Here's exactly how.

The Formula: Why 1:0.8 Maltodextrin to Fructose (Not the Old 2:1)?

The original sports science benchmark was a 2:1 glucose-to-fructose ratio. More recent research — and what the premium brands quietly reformulated to — pushes closer to 1:0.8 (maltodextrin:fructose). At high carb intakes (80g/h+), this ratio gets you closer to saturating both transporters simultaneously: SGLT1 handles the maltodextrin (which breaks to glucose rapidly), and GLUT5 handles the fructose via a completely separate pathway. Neither gets bottlenecked. The result is 90–100g/h absorbed without the GI meltdown you'd get from glucose alone.

Here's what my 100g/h target looks like in practice:

Ingredient	Amount per 100g carbs	Purpose	Approx. Cost
Maltodextrin	~56g (2oz)	Primary glucose source; low sweetness, fast gastric emptying	~$0.10
Fructose	~44g (1.6oz)	Second transporter (GLUT5); unlocks >60g/h absorption	~$0.15
SiS GO Hydro Tab	1–2 tabs (~300–600mg Na)	Sodium, electrolytes, light flavour	~$0.25–$0.50
Water	500–750ml (17–25oz)	Carrier; keeps osmolality isotonic	$0.00
Total per 100g carb serving	—	—	~$0.50–$0.75

Dissolve everything in a 750ml (25oz) bidon, shake hard, ride. The SiS GO Hydro tabs are effervescent, dissolve completely, and add enough lemon or berry flavour to take the edge off what is — honestly — very sweet sugar water. More on that below.

The Cost Breakdown Is Kind of Embarrassing (For the Brands)

Let's put the numbers side by side. Because this is the part that'll make you wince at your last Amazon order.

Product	Cost per 100g Carbs (approx.)
Maurten Drink Mix 320	~$4.00–$4.50
SiS Beta Fuel	~$3.00–$3.50
Precision Hydration Carb 90	~$2.50–$3.00
High5 Energy Drink	~$1.50–$2.00
✅ DIY maltodextrin + fructose + SiS Hydro tab	~$0.50–$0.75

On a 3-hour ride at 80g carbs/hour, that's 240g total. With Maurten you're spending ~$10–11. With the DIY mix you're spending ~$1.50. Over an 8h/week training block with multiple fuelled sessions per week, the savings compound fast — we're talking $30–40 per week for athletes who are actually fuelling at target. Over a season that's a new pair of shoes, a power meter upgrade, or simply not flinching every time you refuel.

I keep a 5kg (11lb) bag of maltodextrin and a 1kg (2.2lb) bag of fructose in the kitchen. Combined cost is under $30 and lasts months. The SiS GO Hydro tabs are the biggest per-use cost in the stack — and they're still cents per serving compared to branded alternatives. If you want to understand how fuelling strategy fits into the bigger picture of your training, my piece on optimizing your nutrition for peak performance is worth reading alongside this.

The Honest Part: Yes, It's Sweet. Here's How to Deal With It.

Here's where I don't sugarcoat it — pun absolutely intended. This mix is sweet. Aggressively, uncomfortably sweet after a couple of hours in the saddle. Commercial brands mask this with citric acid, flavour compounds, and careful osmolality tuning. Your DIY version is more honest. Raw fructose has a distinctive sweetness that hits differently when there's nothing masking it.

The tooth enamel exposure is also real. Maltodextrin and fructose sitting on your teeth for a 3–4 hour, 100km (62mi) ride is not a great scenario. The same is true of gels and commercial drink mixes at equivalent doses — the exposure is similar — but it's worth acknowledging rather than glossing over.

What actually works for me:

• Water rinse every 20–30 minutes: A swig of plain water and a quick swish. Simple, effective, costs nothing. I carry a second small bottle just for this on long efforts.
• Xylitol gum post-ride: Xylitol has genuine evidence for reducing Streptococcus mutans — the bacteria primarily responsible for enamel decay. I keep a pack in my kit bag. Not optional.
• Don't over-concentrate: I target 80–90g carbs per 750ml (25oz) bidon. Going higher makes it thick, very sweet, and slows gastric emptying — which defeats the whole point.
• Solid food on the side: A bar or two per ride (Clif Bar, a homemade rice cake, whatever) breaks up the liquid monotony, gives the gut something solid to process, and helps stabilise blood sugar on efforts over 2 hours. Think of the drink as your primary delivery vehicle, the bar as the gap-filler.

Worth noting: staying warm during long winter rides also affects how your gut processes nutrition. I covered why in my piece on how a 1°C core temperature drop tanks your gravel ride — gut motility slows when you're cold, which matters for liquid nutrition absorption.

Practical Setup: How to Actually Make This Work on Ride Days

The prep barrier is genuinely low. Here's the workflow that works for me:

• Get a kitchen scale with 1g (0.04oz) precision. A basic $10–12 postal or kitchen scale is fine. Eyeballing maltodextrin and fructose will drift your ratio and your carb target — and if you're going to do this, do it right.
• Pre-batch for the week: Sunday evening, weigh out 5–6 individual servings into zip-lock bags. Each bag = one 100g carb serving. Morning of a session, bag goes in the bidon, add water and a tab, shake, go. Zero friction.
• Dissolving tip: Fructose can clump slightly in cold water. Add a splash of warm water first, stir briefly, then top up with cold. A wide-mouth bidon (Camelbak Podium, Elite Fly) handles this better than a narrow-neck bottle.
• Optional citric acid: 1–2g (0.07oz) per serving adds tartness and cuts the sweetness significantly. Available from any homebrew shop for a few dollars per kilogram. Worth trying if the sweetness becomes a compliance issue on long rides.
• Optional caffeine: Pure caffeine powder at 100–200mg per serving for long efforts. Requires a milligram-accurate scale — this is not something to eyeball. About $0.02 per dose. A useful lever for 4h+ sessions without relying on caffeinated gels.

Pros and Cons

✅ Pros	❌ Cons
✅ Cost: ~85–90% cheaper than Maurten, Beta Fuel, or Precision Hydration per 100g carbs — same dual-transporter science, fraction of the price.	❌ Very sweet — no commercial flavour masking. Some athletes hit a wall around 2h+
✅ Precise carb targeting: you weigh it, you know exactly what you're getting. No more guessing what's actually in a proprietary sachet	❌ Requires prep: kitchen scale + 5 minutes. Not grab-and-go for spontaneous sessions
✅ Fully scalable: 60g/h, 80g/h, 100g/h — just adjust the weighed amounts. Works for any training block or race-day target	❌ Tooth enamel exposure is real on multi-hour sessions (same as gels at equivalent dose, but worth managing actively)
✅ Clean label: two base ingredients plus an electrolyte tab. No additives, preservatives, or proprietary mystery blend markup	❌ Fructose can clump in cold water — dissolving takes a bit more effort than a pre-mixed sachet
✅ Extendable: add caffeine powder, citric acid, or electrolyte tabs to spec — you control every variable	❌ No gel format out of the box — liquid only unless you add a thickening agent like xanthan gum

Verdict: The Best Marginal Gain That Costs Almost Nothing

If you're training 6–10 hours per week and actually hitting carb-per-hour targets, making your own homemade nutrition drink from maltodextrin and fructose is one of the highest-leverage, lowest-cost decisions you can make. You're getting the same dual-transporter science that Maurten and Beta Fuel charge $3.50–$4.50 per serving for — at roughly $0.50–$0.75 per 100g carbs. The sweetness is real, the prep requires a scale, and your dental hygiene routine needs a small upgrade (xylitol gum — keep it in the bag). None of those are reasons to stay on expensive branded products. They're just things to manage. Start with a 5kg (11lb) bag of maltodextrin, 1kg (2.2lb) of fructose, weigh carefully, add a SiS GO Hydro tab, and ride. You'll wonder what took you so long.

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What carb-per-hour target are you training to hit right now — and are you still paying brand prices for it, or have you gone rogue with bulk powder too?

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