Avocado & Banana Breakfast Smoothie (IDDSI Level 2)

IDDSI Level 2 (Mildly Thick) | 10 minutes | Easy

This avocado and banana smoothie is one of the few IDDSI Level 2 breakfast options that achieves the correct texture naturally, without artificial thickening agents — the fat content of ripe avocado and the starchy density of fully ripe banana together produce a thick, smooth, uniformly pourable liquid that consistently falls within the Level 2 (Mildly Thick) flow range. It is high in calories, rich in potassium, and palatable to most elderly residents, making it particularly valuable for those with poor appetite, unintentional weight loss, or difficulty consuming adequate nutrition at mealtimes.

Ingredients (1 serving)

• Half a ripe avocado (approximately 75g flesh)
• 1 ripe banana, medium-sized (approximately 100g, well-spotted)
• 150ml full-fat fresh milk (or soy milk / oat milk)
• 2 tablespoons plain full-fat Greek yogurt (approximately 40g — optional, increases protein and thickness)
• 1 teaspoon honey (optional, adjust to taste)
• A few drops vanilla extract (optional)
• 3–4 ice cubes (optional — omit if the resident cannot safely manage cold drinks)

Method

1. Halve the avocado and remove the stone. Scoop the flesh out with a spoon.
2. Peel the banana and break into several pieces.
3. Place the avocado flesh, banana, milk, Greek yogurt (if using), honey and vanilla extract into a blender.
4. Blend for 45–60 seconds until completely smooth — no particles, no fibrous texture.
5. Check the texture with a spoon: it should flow slowly and smoothly from the spoon in a thick, continuous stream (consistent with IDDSI Level 2 Mildly Thick).
6. If too thick (approaching Level 3), add a small amount of additional milk and blend again. If too thin, add a small additional amount of avocado flesh or Greek yogurt.
7. Pour into a cup. Serve with a wide-bore straw (5–6mm diameter) or a teaspoon.

Texture Test

IDDSI Level 2 (Mildly Thick) confirmation: Draw up the smoothie in a 10ml needleless syringe — flow within 10 seconds should be between 1 and 4ml (Level 2 range). Alternatively, perform the fork test: the smoothie should flow through the tines of a fork noticeably more slowly than water, leaving a thin coating on the back of the fork. The smoothie should NOT flow freely through a standard thin straw (internal diameter under 3mm).

Uniformity check: The smoothie should be completely uniform throughout — no visible particles, lumps or fibrous texture. If any granularity is detected, blend for a further 30 seconds and re-test.

Safety Notes

⚠️ Use a wide-bore straw — standard thin straws (diameter under 3mm) require strong suction effort and can increase the risk of aspiration in residents with reduced swallowing function. Use a wide-bore straw (5–6mm diameter, as used for bubble tea), or serve by teaspoon.

⚠️ Avocado allergy / latex cross-reactivity — avocado allergy, sometimes associated with latex-fruit syndrome, does occur. Confirm the resident has no relevant allergy history before first serving.

⚠️ High potassium content — both avocado (approximately 500mg K per serving) and banana (approximately 400mg K) are potassium-rich. Residents with chronic kidney disease or on potassium-restricted diets should consult their healthcare team before including this recipe regularly.

⚠️ Prepare and serve immediately — avocado oxidises rapidly on contact with air, turning brown and developing an off-flavour. Add a small amount of lemon juice (approximately ¼ teaspoon) to slow oxidation, and serve within 15 minutes of blending.

Sourcing in Hong Kong

• Avocado: Available at PARKnSHOP, Wellcome, City’super and some wet market fruit stalls; choose Hass avocados (dark, pebbly skin) that yield slightly to gentle thumb pressure — this indicates ripeness; if hard, ripen at room temperature for 2–3 days
• Banana: Wet markets and supermarkets; select fully ripe bananas with brown spots — they blend more smoothly and are naturally sweeter, requiring less added honey
• Greek yogurt: Supermarket dairy section; choose plain, full-fat Greek yogurt (brands such as Chobani or Fage); the live cultures support gut health, which is beneficial for elderly residents with constipation or antibiotic disruption

Nutrition

Approximately 320 kcal per serving, 9g protein, 18g fat, 34g carbohydrate. Avocado is an excellent source of monounsaturated fatty acids (heart-protective), potassium (approximately 800mg per serving, supporting blood pressure regulation), folate, and vitamin K. Banana provides additional potassium, vitamin B6 (supporting neurotransmitter synthesis), and quickly available carbohydrate energy. Greek yogurt contributes protein, calcium, and live probiotic cultures. The overall calorie density is high for the volume — useful for residents who cannot consume large quantities at mealtimes. A full serving provides approximately 16% of daily calorie needs for an elderly resident requiring 2000 kcal/day.

Cultural Note

The avocado smoothie represents a newer layer in Hong Kong’s breakfast culture — one that arrived alongside the global health-food movement of the 2010s and was enthusiastically adopted by the city’s café scene. While it lacks the deep historical roots of congee or cha chaan teng staples, its practical nutritional profile — high calorie density, smooth texture, potassium richness, and natural palatability — makes it particularly well-suited to dysphagia nutrition management. In elderly care settings in Hong Kong, this smoothie has become an increasingly popular between-meal supplement and morning alternative for residents with poor appetite who struggle to consume adequate nutrition through traditional mealtimes.