Masking Functional Ingredients: Protein, Botanicals, Caffeine and More

Protein-fortified beverages, gut-health drinks with adaptogens, vitamin gummies, energy formulas with caffeine and B-vitamins — the functional category is one of the fastest growing in Canadian food and beverage. But nearly every functional active brings sensory baggage: bitterness, astringency, metallic notes, beany or green character, or chalky mouthfeel.

Repeat purchase in functional products is decided by taste, not by the benefit claim. Masking is where functional products win or lose.

Masking is not about covering a bad taste with a stronger one. Effective masking systems work on three mechanisms: blocking perception of specific off-note compounds, redirecting the palate with congruent top-notes, and rounding the finish so bitterness doesn't linger.

Each active has a distinct off-note signature. Pea protein needs a different approach than whey; caffeine bitterness is different from botanical astringency; iron and mineral notes behave differently again. That's why generic 'masking flavours' underperform — the system must be matched to your exact formula.

Plant proteins (pea, fava, soy, rice): beany, green, earthy notes plus astringent finish. Caffeine and energy blends: sharp bitterness that survives high sweetness. Botanicals and adaptogens (ashwagandha, turmeric, mushroom extracts): earthy, medicinal character. Vitamins and minerals: metallic and sulfurous notes. High-intensity sweeteners: bitter, lingering aftertastes.

Delsa's masking range covers all of these, and our Canadian team matches systems to your base in bench trials — with free samples before you commit.

Send the masking brief with your exact formula — active levels, sweetener system, pH and process. Masking performance is matrix-dependent: a system that works at pH 3.5 in a beverage may underperform in a neutral dairy base.

Plan two to three iteration rounds. The first sample gets you 70–80% of the way; fine-tuning sweetness curve and top-note character closes the gap. Typical total timeline from brief to approved masking profile: 4–8 weeks.